Malicious PDF — malware analysis report

Static analysis result for SHA-256 bab7584844c79586…

MALICIOUS

PDF

83.4 KB Created: 2021-07-02 07:08:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e1a0a7e4d42bff588e605e72c6639c6a SHA-1: bba9580cda533b9a33beb2e4c4427cfc80798530 SHA-256: bab7584844c79586238ffb0b772fd8ee2ee447fe28fee05ee57ea4e15166a336
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to external PDFs hosted on compromised websites, suggesting it functions as a lure to download further malicious content. The presence of embedded URLs and the 'Fake invoice / payment lure' heuristic indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://sxhk365.com/uploads/file///48581582111.pdf
    • http://www.deep2001.com/images/library/File/39046248451.pdf
    • https://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/330b49736f0ee42b1780125a3d12d9ac/bemowopujonusebavapovux.pdf
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d584b06e98e---2967672287.pdf
    • https://www.potterycommercials.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16076cc3fe1f3d---jowidoloraranuxazab.pdf
    • http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160839b5536e38---xirowefe.pdf
    • http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f6726e4c0b---78670394542.pdf
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/oa60et894uu3vv1b9bf43uqb2r/40162703907.pdf
    • http://edumedcare.pl/upload/files/garuwamagozedi.pdf
    • https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/c72caea18db368899205adee0b527a60/18448334346.pdf
    • https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/ilf1chatn7maigo08s37sfs0jd/58238225490.pdf
    • http://hoangle.vn/uploads/userfiles/file/rinaxelijufage.pdf
    • https://www.aserspa.net/wp-content/plugins/super-forms/uploads/php/files/qr5vsgd3v7pg4nbj27eb5k2lf8/39013767265.pdf
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16085386333a67---96840770011.pdf
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1607faa5ab94f3---5953910472.pdf
    • http://medica-eg.com/userfiles/file/foropuw.pdf
    • http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/1607a4562d804b---sajoduli.pdf
    • https://jnfarley.com/wp-content/plugins/super-forms/uploads/php/files/siqnl5a2kp7bv0ki7dtfqs32s3/lalox.pdf
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/ee1a76287f78acca5f2c464bfd57ea7b/52577208025.pdf
    • http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/832b606f9b7e28a59385d4b4c159d4cf/47588444158.pdf
    • https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/e6ad8be2d2b337b01d4faeb73e3855ee/33191388760.pdf
    • http://dbjhockeytournament.com/clients/f/f9/f9ff496842c877cbb4522510b668f2a2/File/80843472943.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=ddp+incoterms+2000
    • 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_off0000e239.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE239 16792 bytes
font_01_sfnt_off0000fa4b.bin
9d95f475d190be978d85558dfb5b51212551a6c086c11fc3ad27b9e6a84f1aec
pdf-font-stream PDF embedded font (sfnt) at offset 0xFA4B 17044 bytes
font_02_sfnt_off000126a1.bin
d167f4fd03497fbe975cfe24ca5d0007218ddecb9bdde85c88d8a1f9faf207e8
pdf-font-stream PDF embedded font (sfnt) at offset 0x126A1 10712 bytes