PDF malware analysis — malicious · 7c274b2db38e0ff1

MALICIOUS

PDF

87.8 KB Created: 2021-07-02 23:44:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24

MD5: 098c5093db68a6227f1dee28566801aa SHA-1: f01fd31ae58c5016c9ef0e3a0d1537f408b8106d SHA-256: 7c274b2db38e0ff1bc5e246daddfe060cf16bd9633ad696957a5475ea1752e58

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The file contains a large number of embedded URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document body is unreadable, but the presence of numerous external links strongly indicates a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9947

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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.
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://medvor.ru/uplcv?utm_term=i+go+to+my+god+and+your+god PDF link annotation
- https://wecareprogram.org/images/file/12061775964.pdfIn PDF document text
- https://lakeshoresmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/rre1s0ddtt1b6t4bjqdodvl990/bosuwafuzabopaketifafet.pdfIn PDF document text
- https://asthasupermarket.com/userfiles/file/zumenozi.pdfIn PDF document text
- http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/160a8fe67a69f1---49907375163.pdfIn PDF document text
- https://bilbox.es/wp-content/plugins/super-forms/uploads/php/files/4bfece1369f959da30007ec0b31c963a/80057252920.pdfIn PDF document text
- http://botosani.ro/img/uploads/file/vujagosizis.pdfIn PDF document text
- http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aea6ea2120c---bofedisasosijekevifumed.pdfIn PDF document text
- https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dfc653f8a8---79594271036.pdfIn PDF document text
- https://gwynharmon.com/home/gwyn/public_html/ckfinder/userfiles/files/jafunuxo.pdfIn PDF document text
- http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/9a5e7b65dc49248ce40898852f2b7d8a/63595824956.pdfIn PDF document text
- https://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/774508a3e5b4ed19d46792f6935fae20/30416129581.pdfIn PDF document text
- https://law.com.sg/wp-content/plugins/super-forms/uploads/php/files/2975d48cddf9c503075b8d34d106f4a3/60721796389.pdfIn PDF document text
- https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/39647c80fb29d8f487decd13c1cf8eac/xapenivibujimilab.pdfIn PDF document text
- http://bracyfamilyreunion.com/clients/c/c2/c2db1a97f769835965582c74015c7782/File/58509636579.pdfIn PDF document text
- http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16088244160899---legibozegexupa.pdfIn PDF document text
- https://spectrumohio.com/wp-content/plugins/super-forms/uploads/php/files/4b47be3ccabf76a060cc7af52b393ec9/davetewixasodarenebarubo.pdfIn PDF document text
- https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/59ef5fe35db0b00eee0bbb6a536d4b22/44050931177.pdfIn PDF document text
- http://a2itsolutions.com/chop/multimedia/userfiles/file/39390147752.pdfIn PDF document text
- https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/o6p64f53ckgf1s8n2k92drcsug/xujurera.pdfIn PDF document text
- http://etcad.net/np/upfile/file/79259924167.pdfIn PDF document text
- http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc5c002de4---63559039352.pdfIn PDF document text
- http://teenmag.cz/userfiles/file/viriwagexezafe.pdfIn PDF document text
- https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/egrrn7i86ss630cs4f8pp0gu60/vadadupob.pdfIn PDF document text
- https://ksuskalology.com/images/file/68074027975.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f08f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF08F	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off000108a6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x108A6	10316 bytes
SHA-256: `2e03bfe00da51a9e8594bdf062126b377f068eb061f27df82cd024412a018b4d`
`font_02_sfnt_off00011fa2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11FA2	18280 bytes
SHA-256: `f63dab10527d304cccfda8bda31106536e03be8d2a8f240ac9034691ad683038`

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