Malicious PDF — malware analysis report

Static analysis result for SHA-256 1665365368b44329…

MALICIOUS

PDF

242.3 KB Created: 2021-07-22 05:12:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 532971baf3bbc1fee02949608015765e SHA-1: 8e2b8957b7450ff6598b923cd75e633c4668c879 SHA-256: 1665365368b44329aac399c6ec28261671df7a0a7c3dc2614b08316c0d14a801
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was flagged by ML classifiers and ClamAV as malicious, with high-confidence heuristics indicating it is an advance-fee scam lure. The document body was unreadable, but the presence of numerous links to compromised WordPress upload directories suggests a phishing or malware distribution attempt. No scripts were extracted, but the PDF structure and heuristic findings strongly indicate a malicious intent related to phishing or scamming.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9324

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://miaousland.fr/ckfinder/userfiles/files/jofizujutawotedut.pdf
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/4ffh972129muusiutv4rvc6rd3/razaxopifiburajadus.pdf
    • https://afd.me.uk/wp-content/plugins/super-forms/uploads/php/files/ojpvpslf1t6nctniddh5blak1f/38638883492.pdf
    • http://cpils.com/userfiles/file/16848948908.pdf
    • http://constantemails.com/userfiles/file/1625809839sifixegosutegojo.pdf
    • https://dvg.asia/ckfinder/uploadfiles/files/sowaruputupolotox.pdf
    • http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/b85f92094a7d3b9dbbcdf73fa81c520d/mumebawen.pdf
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/160c6e64a52751---lagupijez.pdf
    • http://rufullthrottle.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609060660744b---naniterududide.pdf
    • https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f12f6abb13---50148481771.pdf
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9b1f60e434---58966349370.pdf
    • https://cvenhancer.com/wp-content/plugins/super-forms/uploads/php/files/3ef6ca8cfd96620e4ea6d4e84f83ab01/87849373786.pdf
    • http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070ae49122ac---sujeresa.pdf
    • https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/16097d28f86e26---totix.pdf
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/ef1fgk1b2c2qe5ktlm8hf7lkb2/vupixubugeju.pdf
    • https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/9be1413048183822644625e7373acf67/zamajimevodigiledemok.pdf
    • https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/cbip1dvu4n1r2mn52pm8drbj63/10739108302.pdf
    • http://hkt-optics.com/hkt/images/userfiles/file/mobisamipakebedikabu.pdf
    • http://centralcogtc.com/uploads/file/12327662506.pdf
    • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fa58c8548f---bopimoxanojanenobotewipe.pdf
    • https://evergreencans.com/userfiles/file/sagufewuduvitimuj.pdf
    • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ee6973d8ca1---93470281342.pdf
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160d401cc2e03b---jolixafetuwek.pdf
    • http://bumsnab.ru/uploads/files/bavebepok.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=exclaustration+religious+life
    • 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_off000354d5.bin
fafaec873d77351817274e48e7766c7103b0af28a476918fcd3218f9e499bed5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x354D5 10696 bytes
font_01_sfnt_off00036d85.bin
7f03407cace2f687645b70ccf49ba48d3f4a5bdcffec8fa68ddb2ce8d1933ffd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x36D85 19044 bytes
font_02_sfnt_off00039fbc.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x39FBC 16792 bytes

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