Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eaaa0410f8b13d3…

MALICIOUS

PDF

91.0 KB Created: 2021-07-07 01:05:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 0ec366a38ef4a9159f68551c516b2790 SHA-1: f34171864fbe44980bfb0d45f4b73a1a38245702 SHA-256: 3eaaa0410f8b13d367dc6730dae7b6df6fc3addcd83fd5c84848dc5e573767bd
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file is a PDF document that exhibits characteristics of an advance-fee scam, specifically mentioning lottery winnings or parcel deliveries. It contains numerous links to external websites, many of which appear to be hosted on compromised WordPress sites, suggesting a link farm or redirection mechanism. The ML classifier and ClamAV detection strongly indicate malicious intent.

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://crewmak.ru/uplcv?utm_term=planners+2019+2020 PDF link annotation
    • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16091f075295e6---59655277704.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/3e126c76494dbdd0eb033d2298f83ec2/50947920226.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a713f57ce17---kekipavaguponem.pdfIn PDF document text
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608e445acfbd4---14741096254.pdfIn PDF document text
    • https://technok.cz/wp-content/plugins/super-forms/uploads/php/files/f64ea5e43a95fc35cfb71b58a5428ac4/43128772741.pdfIn PDF document text
    • http://xn--l3cbpp3gh4a5g5c.com/userfiles/files/divakegabudafomaxuroxinoz.pdfIn PDF document text
    • https://bomberosdenavarra.com/userfiles_nexo/files/81149025340.pdfIn PDF document text
    • https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/1h654bp0ta34ldj06du3vtecnr/59961892646.pdfIn PDF document text
    • https://aadhaarretail.com/administrator/imagetemp/file/80592611289.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078ec81c22d1.pdfIn PDF document text
    • http://bhsclassof70.com/clients/a/ac/acf0241a72c9eb28a719a759cf8a4748/File/38071333719.pdfIn PDF document text
    • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16084288e353e6---vumaxi.pdfIn PDF document text
    • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a500c3bd118---wedafikusosadopowud.pdfIn PDF document text
    • https://reparationmobile.net/userfiles/file/fimepadevabudoxufijol.pdfIn PDF document text
    • https://www.accidentinjuryalbuquerque.com/wp-content/plugins/super-forms/uploads/php/files/qndqardnp76bl6n4pe5ekkhc3h/motalijogubilewosubap.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/84940515301.pdfIn PDF document text
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b4ac49958d---tagolefowijivu.pdfIn PDF document text
    • https://yourlightingbrand.com/wp-content/plugins/super-forms/uploads/php/files/42974cbf7788345c196aa2f5e9bf6291/fadojabanegenoge.pdfIn PDF document text
    • http://szpk.hu/_user/file/kivezevini.pdfIn PDF document text
    • http://i-harmonics.com/upload/files/67999424865.pdfIn PDF document text
    • https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/b6k7hiff3b6cnnbgh0e08dn2ne/50066714803.pdfIn PDF document text
    • https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088f7473e892---72506762749.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c75218c3aa---wanifev.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.

FilenameKindSourceSize
font_00_sfnt_off000101f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101F2 10252 bytes
SHA-256: 2c78b3611f63ada932804407cde36ed378ba6b326b1bcb2a281ca24ba36e6882
font_01_sfnt_off00011940.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11940 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013152.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13152 17528 bytes
SHA-256: 8cbfef95e844763637b7453ed4a80b5aa88f9d748edb5a544cc50b309de8ee34

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