Malicious PDF — malware analysis report

Static analysis result for SHA-256 bec29893df1687f6…

MALICIOUS

PDF

92.2 KB Created: 2021-06-26 04:20:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 3945799dac77d2023fd63fd6fac5f23b SHA-1: 5acf609cccb1a117e174b8850a7fc14ccf9beb8c SHA-256: bec29893df1687f6c85969d90b92ad6e81c0b47c4382d69c8af3d07a0b4944f0
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by ML classifiers and ClamAV as malicious, with heuristics indicating it's an advance-fee scam lure. It contains numerous links to disposable hosting and compromised CMS upload directories, suggesting it's part of a link farm designed to distribute malicious content. While no scripts were explicitly extracted, the PDF structure and link farm characteristics point towards a phishing or scam attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://suemsas.com/wp-content/plugins/super-forms/uploads/php/files/e945tg4lp843poc26kooiaom44/kavotipevomuke.pdf
    • https://www.colours-of.com/wp-content/plugins/super-forms/uploads/php/files/6p2qn77s33g0qv5iee3e8ncu2u/fiwomamosejakidunutitoj.pdf
    • http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a741127ac74---42391423063.pdf
    • https://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/tjneo9n9jp097sil1tritgbsk7/16921413176.pdf
    • https://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/b916aae14dec4741bc5602c94fea1fcc/kisegapavetuzoxuv.pdf
    • https://pointvirgule.ca/upload/editor/file/19902382188.pdf
    • http://php-lounge.de/userfiles/file/37095087945.pdf
    • https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/709dfc552be2dcbcd480f2508dc5b13e/32875077879.pdf
    • https://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/cqenfittbcu5h1on29nlibn6o0/woduxo.pdf
    • https://faresaldabbous.com/uploads/files/gejanizurakadozev.pdf
    • https://www.citysecurity.org.uk/wp-content/plugins/super-forms/uploads/php/files/6h24nsdkdlfmm47gsjags0rfuk/97138032129.pdf
    • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16098438f644ed---35412383843.pdf
    • http://itaindustrial.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160910c864ace3---55948645803.pdf
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/jquo60cq3b38q8m24o1fl5hpr2/fuxabojivanejunesowigivo.pdf
    • http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/1609b6f1adf156---subuvemumigisun.pdf
    • https://www.d-table.com/wp-content/plugins/super-forms/uploads/php/files/79bba7d5c903251ed11f89c2c6bd8601/32526730801.pdf
    • http://7tec.ru/userfiles/files/tirojabubalefusazag.pdf
    • http://airconbank.com/upload/fckeditor/file/20651006051.pdf
    • http://ahkjt.com/upfile/file/51348923164.pdf
    • http://peoriamayorprayerevent.com/clients/1/16/166e3f524b51ec168ebfd48f86188a1d/File/malomovinavuranifarazup.pdf
    • https://him-home.ru/wp-content/plugins/super-forms/uploads/php/files/7cf4f0b075e549a808a88e8fcebe2a5a/29206163153.pdf
    • http://www.deco-interieure.com/userfiles/file/relofuxomanibexakazo.pdf
    • https://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/c61feba7b339b34fd4b086ccc3e9501d/91780102685.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=deed+of+release+template
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010566.bin
440c7c0b0809601fc9fb02a4be946297ae5de918bfec9f9be144e2287e28270c
pdf-font-stream PDF embedded font (sfnt) at offset 0x10566 17720 bytes
font_01_sfnt_off00013430.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x13430 16792 bytes
font_02_sfnt_off00014c47.bin
cad44f9df791b46aa1339548293628fc18f298f4067949605918c7176f6f5861
pdf-font-stream PDF embedded font (sfnt) at offset 0x14C47 10464 bytes