Malicious PDF — malware analysis report

Static analysis result for SHA-256 1aa142b697e2412d…

MALICIOUS

PDF

78.4 KB Created: 2021-06-13 07:12:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80b3e19d0dcee5c39d208eaa744ebde5 SHA-1: f09dfa20eca9e58f0710ba5a425777373ab4bce6 SHA-256: 1aa142b697e2412d06dbd23afa379c7092ba5efaf78476ead3a1cda20d8582d8
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is classified as malicious by ML models and ClamAV, and exhibits characteristics of an advance-fee scam. It contains numerous links to external websites, many of which appear to be compromised or hosted on disposable domains, suggesting an attempt to redirect users to malicious content or phishing pages. The document's structure and content align with common lures used in advance-fee fraud schemes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://philabc.ru/uplcv?utm_term=vroid+custom+clothing
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/56171312574.pdf
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/f6e70cfc0443fc6b2b1e3d32d52ddfe7/baxovugotasaj.pdf
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/a17df8c1223e6c5f24825d7e07c1f400/revomogimeki.pdf
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e87213523a---tutabujipodosoj.pdf
    • http://malbreil.com/userfiles/file/69647662252.pdf
    • http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079b7f58f4d5---zoxelokaxuk.pdf
    • http://springswellness.net/wp-content/plugins/formcraft/file-upload/server/content/files/16079d57c5e76f---totumenivoreguxomi.pdf
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b586139a17e---49257720383.pdf
    • http://orsolyajuhasz.com/ckfinder/userfiles/files/tatisoniramutumawape.pdf
    • http://katyababash.com/images/uploads/file/22275789683.pdf
    • https://www.waterlooarmsnewforest.co.uk/wp-content/plugins/super-forms/uploads/php/files/68af25826b6326b2363c3089c7545ffc/15414513211.pdf
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b1900c0683---1572429972.pdf
    • http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/95fde38686071bf48577afa57ee8494c/41757028218.pdf
    • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/007o1tfppbu7qnc99n5dig7i52/jenojatukumotemip.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aee4b43c98b---67478171216.pdf
    • https://www.duffylighting.com/wp-content/plugins/super-forms/uploads/php/files/d16bb2aea85e5aa1610709ce11d4b546/8781621381.pdf
    • https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160af23ced0ddb---wegatulirupokowukisopa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f675.bin
1f91748fe894db75bb602e0ba8a5dc85c54567e17a6ac2b443be0362b24b48ae
pdf-font-stream PDF embedded font (sfnt) at offset 0xF675 5108 bytes
font_01_sfnt_off000107b0.bin
d35092e3cc58e153eb2cf85e4d8e2e942faa99722e99cc5964680bc1d2da7472
pdf-font-stream PDF embedded font (sfnt) at offset 0x107B0 10908 bytes