Malicious PDF — malware analysis report

Static analysis result for SHA-256 270fea2e12895696…

MALICIOUS

PDF

85.6 KB Created: 2021-06-27 07:33:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b5e30e62109d0f1bd4bce4fc38c475f5 SHA-1: 2b3cdbd1cfdb261f77b7c59c07c2dbc7c89f84ac SHA-256: 270fea2e12895696969e6cb4444ac9e4027ad0b3a06f6e97dc4103169788ab0f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains numerous links pointing to compromised CMS upload storage and disposable hosting, suggesting a phishing or malware distribution campaign. While no scripts were explicitly extracted, the nature of the links and the detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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
  • 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 http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3771c871fb---xizuputizepipapos.pdf
    • https://isabellepieman.com/userfiles/file/lukozofes.pdf
    • https://247hvac.ca/fabulous1/uploads/files/93187562365.pdf
    • http://cafesezony.ru/fck_editor_files/files/4596681714.pdf
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8777b7715d---vufedere.pdf
    • http://ural-resyrs.ru/data/file/67244780505.pdf
    • https://kassa-evotor.ru/wp-content/plugins/super-forms/uploads/php/files/7282p1634ph380o1cnjaff9on9/jarikonabi.pdf
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/1607793f79a6b9---42406346411.pdf
    • https://petala.gr/userfiles/file/redadivumekik.pdf
    • http://bigband-ulm.de/userfiles/files/sumituxusinefaxepebuka.pdf
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8ae5c1c2e---8880366438.pdf
    • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/462ec4d0abf8999f154e89c5074a2dfd/milagenikovitapid.pdf
    • https://iveducentar.com/uploads/assets/file/bipezodajepetosobo.pdf
    • http://www.sevenchurchestour.net/seven/wp-content/plugins/formcraft/file-upload/server/content/files/1609e9bb46ba7d---fafemeboxazolafixijamebaf.pdf
    • https://www.partyshuttlebus.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160d7c2fe64d9b---suzinegasizu.pdf
    • https://ascinfratech.com/clientprojects/trading/file/57998412747.pdf
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160c93e7761c93---vuwuvurikeveveximop.pdf
    • https://digidatadecolombia.com/wp-content/plugins/super-forms/uploads/php/files/cee0b74877b3e089a6baefd8044b07d4/zunotolepomovezuwig.pdf
    • http://bet-balance.com/userfiles/file/xewetamijijine.pdf
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6a10dc59c0---37030504363.pdf
    • http://montaze.org/democms/userfiles/file/waxedifekigotida.pdf
    • http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/160708f30e0433---niriwogik.pdf
    • http://katachizu.com/img/news/files/15028814110.pdf
    • http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/m9puq8drbe8lbetjpq2m30s4h1/sugitujagovovumisos.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=toasting+walnuts+in+toaster+oven
    • 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_off0000eac1.bin
62a08f5498178add5507d58c9c9df7d7981a18f9f1824f4e5601a349dd3e3962
pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC1 17584 bytes
font_01_sfnt_off000118dc.bin
6cb3ff975167787b75655d7493e2cb7f44274a0147ffb66907050f7bbc1bb640
pdf-font-stream PDF embedded font (sfnt) at offset 0x118DC 10500 bytes
font_02_sfnt_off000130fc.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x130FC 16792 bytes