PDF malware analysis — malicious · eb09f0ddabed3b70

MALICIOUS

PDF

96.6 KB Created: 2021-08-06 03:28:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07

MD5: 87e90c849631571b7acf1a04d903fce7 SHA-1: 741abaf3c0f335c09ef18a49e46010dc0d66c2c9 SHA-256: eb09f0ddabed3b70cee9eeaa128c9448e1e479d7a220cc432479afc230e7e6e9

204 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.001 Spearphishing Attachment

The PDF document exhibits characteristics of a phishing lure, specifically by instructing the user to copy and paste content into a shell context, which is a common technique for executing malicious commands. The presence of multiple external URLs, some hosted on compromised WordPress sites, suggests a distribution mechanism for further payloads or phishing content. ClamAV detection further supports the malicious classification.

Machine Learning

Nyx PDF Classifier malicious score 0.9653

Heuristics 8

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE

Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM

PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://synerhu.ru/uplcv?utm_term=how+to+get+a+modded+clash+of+clans+server PDF link annotation
- http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16079497d91ac0---lanuxopizosuroxojuse.pdfIn PDF document text
- https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6af87edfbb---80968690607.pdfIn PDF document text
- https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/71117252703ae36a78c9fa294ed50480/60243766070.pdfIn PDF document text
- http://studioriboldi.eu/userfiles/files/70567223837.pdfIn PDF document text
- https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/rstfs8q5aq8370crsc5bgsnrfl/bujesununekimaxope.pdfIn PDF document text
- http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/n1jfcpvhfmtsndp7il6gupq9j0/90681001509.pdfIn PDF document text
- http://homespakistan.net/magzine/uploadfiles/file/roremujuvodomaxafadeg.pdfIn PDF document text
- https://yourlightingbrand.com/wp-content/plugins/super-forms/uploads/php/files/9165d9337a75bbb6d51983f064629aa1/jiwidipenufefegezi.pdfIn PDF document text
- http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/160b2e73cd6d77---mofulivukorunet.pdfIn PDF document text
- http://ideviceplus.be/app/webroot/files/userfiles/files/xegabule.pdfIn PDF document text
- https://rmp-traueranzeigen.de/cms/files/16039963285.pdfIn PDF document text
- https://www.asahinafunnels.com/wp-content/plugins/super-forms/uploads/php/files/a3crs3ogrmd62l01rmtnhg5j31/wufawuvogetesuzaru.pdfIn PDF document text
- https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/160abd0be7196c---77977552968.pdfIn PDF document text
- http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/i4fmnsc5r5m7vg82gd18vjmu87/jokatu.pdfIn PDF document text
- http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160b74525b0a70---bajubukosobaj.pdfIn PDF document text
- http://euroteam.vn/ckfinder/userfiles//files/vazekudonejafaro.pdfIn PDF document text
- http://vngo-cc.vn/cooker/public/files/13799760678.pdfIn PDF document text
- https://rfcorporation.net/wp-content/plugins/super-forms/uploads/php/files/78d5ce81f318241851eca861e0dd7a1b/27041694547.pdfIn PDF document text
- https://girilawfirm.com/content_files/files/94335050215.pdfIn PDF document text
- https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/70411dc068518467c66c4fafe27e0982/52026734540.pdfIn PDF document text
- https://gonguyenkhoi.vn/upload/files/mavobovepiliwatuv.pdfIn PDF document text
- http://aquatrustfina.com/userfiles/file/fofozomifisajabubumewa.pdfIn PDF document text
- http://srihemkuntschoolint.com/slbdavbatala/userfiles/file/tizurulepidawefede.pdfIn PDF document text
- http://www.makattakasinti.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c43b8de98c---kidewawevikurowenike.pdfIn PDF document text
- https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/slg3pm44h2jqk311tbdllm14g0/welonidalotafofud.pdfIn PDF document text
- https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/160b639a9ccdcb---lorugilaridosinomanojeba.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000fc57.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFC57	17776 bytes
SHA-256: `101c1baaa230375e5d045c1bbfca2d0c47760e277e3bd9f2306a0fb0baac42d9`
`font_01_sfnt_off00012ad7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12AD7	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off000142ee.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x142EE	10972 bytes
SHA-256: `76e41cfd7ca7cc76d749a05339ea4959f1c9079e12be5a17e17d87dc0c63b5a0`
`font_03_sfnt_off00015c0a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x15C0A	16664 bytes
SHA-256: `b1908eb7132dc5e23acbb1ed1ed7ed29cbae9bd49c52ceef8edaafb9f9623fae`

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