PDF malware analysis — malicious · 7849502f31cbfd5d

MALICIOUS

PDF

93.8 KB Created: 2021-09-19 06:29:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24

MD5: b7d0c07a0682aa91904de53bceae1398 SHA-1: 3b00cad6fea0ebd0bf75415702ab2d87769b1af1 SHA-256: 7849502f31cbfd5d5bf047255f21de01481134640db592171eca341fd2f979f2

166 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.001 PowerShell

The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The 'SE_CLIPBOARD_COMMAND_LURE' heuristic strongly suggests the document is designed to trick users into executing commands via copy-pasting into a shell, a common technique for downloading and executing further payloads. The presence of numerous external URLs, including one with a 'utm_term' parameter, points towards a phishing or scam campaign.

Machine Learning

Nyx PDF Classifier malicious score 0.9888

Heuristics 6

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
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://huntic.ru/uplcv?utm_term=john+wick+blu+ray+download+free PDF link annotation
- http://winecellarkeeper.com/ckfinder/userfiles/files/vawegexajoki.pdfIn PDF document text
- https://sunnyrosesschool.com/userfiles/file/runuzuzadefemaroboxojal.pdfIn PDF document text
- https://popa.com.br/wp-content/plugins/super-forms/uploads/php/files/9384450dbe6726b34a88f67393fa34e9/62058573017.pdfIn PDF document text
- http://aptekarynek.pl/zdjecia/fck/file/fuzikikedimifubi.pdfIn PDF document text
- http://sro52.ru/uploads/files/nuxixebijo.pdfIn PDF document text
- http://deltools.com/userfiles/file/48547732527.pdfIn PDF document text
- http://arci-mp.fr/admin/File/64116620302.pdfIn PDF document text
- http://hurtglass.pl/upload/file/80093004999.pdfIn PDF document text
- http://chinajnbt.com/images/upload/File/panaw.pdfIn PDF document text
- http://ovecollection.com/royal/admin/images/products/file/47852859063.pdfIn PDF document text
- http://mtkshop.com/images/uploads/file/mudukukezaxu.pdfIn PDF document text
- https://lekkermooi.nl/userfiles/file/losas.pdfIn PDF document text
- http://www.diplomat2014.ru/ckfinder/userfiles/files/ledizedo.pdfIn PDF document text
- http://uniondrygoods.com/fckeditor/userfiles/file/27071676157.pdfIn PDF document text
- http://neuchina.org/userfiles/file/goredutu.pdfIn PDF document text
- https://bevillelecomte.ovh/ckfinder/userfiles/files/vuzepafilesidarujilukuxan.pdfIn PDF document text
- https://zemiigori.com/uploads/file/83044899505.pdfIn PDF document text
- http://themetamorphoseprogram.com/userfiles/file/gomazikexepi.pdfIn PDF document text
- http://weiken-rc.com/upload/files/wudega.pdfIn PDF document text
- http://csp.hu/editor_up/mesilojunusetizunelo.pdfIn PDF document text
- http://energywork.pl/userfiles/file/79755395456.pdfIn PDF document text
- https://mauspro.net/upload/files/73104548794.pdfIn PDF document text
- http://www.smartusb.info/images/library/File/duzagufizogewum.pdfIn PDF document text
- http://discus-rus.ru/upl/file/pifepanaxuzojuseri.pdfIn PDF document text
- http://cesishotel.com/res/wysiwyg/file/febabi.pdfIn PDF document text
- http://omonetach.pl/foto/ilustracje/file/dapewegos.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_off000109a2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x109A2	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off000121b4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x121B4	17880 bytes
SHA-256: `86921377231a837970b955fe0eee148eb38102c38677a0c74b4750d8a44a2f99`
`font_02_sfnt_off00014ff2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14FF2	10828 bytes
SHA-256: `119aaf4abfc5cbe1455147121500908cb5a787bca776700bfd544469800d3d79`

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