Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f0a35d8af874216…

MALICIOUS

PDF

85.5 KB Created: 2021-06-26 19:14:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7ee339e7d9cf86b458e58b2d5d33e995 SHA-1: 85ab6d2e79a8185ca10a01a19e63601f1195f171 SHA-256: 3f0a35d8af87421643083b5d20e988a1cc7b07144e3155b3f9bd17d7063a55b7
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document was flagged by ML classifiers and ClamAV as malicious, with heuristics indicating it's an advance-fee scam lure. The PDF contains numerous links to compromised WordPress upload storage, suggesting it's designed to host and distribute malicious content. While no scripts were explicitly extracted, the PDF structure and the nature of the links point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/16070dea1c3d9f---36461334135.pdf
    • http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6963197834---kalenemarexerujewipimu.pdf
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/160838ee308d1c---xufevix.pdf
    • https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160984ba3a8f71---vudaxekofafib.pdf
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1d15f9b1ae---6237570306.pdf
    • https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608e688294809---jiralot.pdf
    • http://jarosi.hu/files/file/95694148053.pdf
    • http://capital96.com/userfiles/file/zujetowobepomezojuleju.pdf
    • http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a796c6555ec---99895352236.pdf
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b68c8e7765d---lojofufonofisi.pdf
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c516f152a02---78201382422.pdf
    • https://autotrilogy.com/wp-content/plugins/super-forms/uploads/php/files/30eaab0195c65328d88c2e96f5fc7c13/51276784881.pdf
    • http://www.heksan.com.pl/file/dabaz.pdf
    • https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4435469bae---jajamutujofagorabasupuwux.pdf
    • https://itracmediav5.com/ckfinder/userfiles/files/19284963394.pdf
    • https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/34480cf339875318efcdf5bbc9c7ff63/xinevutixorulitoxere.pdf
    • http://phuocthuan.vn/images/pic/file/29148443187.pdf
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160d2148b2cd24---7423397894.pdf
    • https://aimhc.com/userfiles/file/28665719104.pdf
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/16095caaf24375---85243447403.pdf
    • https://www.breastcancerfoundation.in/wp-content/plugins/super-forms/uploads/php/files/f740ec0c682fc1bcd51f88535b7ee132/21353153095.pdf
    • https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/b2btc4h7kv869jldlecn64in11/21299284454.pdf
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607de446a5c6b---38271531609.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=answers+to+food+quiz
    • 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_off0000ec11.bin
b5c99c040b33a6bfd494e8c43b11371afc152c82d400efb229b3338dca7e7824
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC11 17496 bytes
font_01_sfnt_off000118e9.bin
d805c8e852a04b14d3afda8d4c29dd6728726329f01c997ebb20b59eae90ebd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x118E9 10512 bytes
font_02_sfnt_off000130e3.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x130E3 16792 bytes