Malicious PDF — malware analysis report

Static analysis result for SHA-256 b00392367bff56ee…

MALICIOUS

PDF

89.8 KB Created: 2021-06-27 00:41:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b5b403d27549ecbf94fbf55e2004ea5f SHA-1: 0fa2a46521c33fd20809339ebaf9bd8e1f241d7c SHA-256: b00392367bff56eeda6dfd67cf745ffc6ee5f8324a162423b7a67b7456c5a5cd
156 Risk Score

Malware Insights

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

The PDF contains a link farm directing to multiple URLs, many of which are hosted on compromised CMS platforms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The file's structure and embedded URLs suggest it's designed to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

Heuristics 6

  • 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.
  • 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://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/ea2ef780d6720deb0be050d74350341e/29249126092.pdf
    • https://forcechicago.com/wp-content/plugins/super-forms/uploads/php/files/237699f1f4fbdfab56b1e4eb170ff8da/65317113769.pdf
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609a0c2328dac---64724317654.pdf
    • http://stevis.cz/files/file/18184094414.pdf
    • http://mousike.it/img_ins/files/92261100647.pdf
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ad4a987d0b---wokapixiwarosuk.pdf
    • https://forex-robo.org/wp-content/plugins/super-forms/uploads/php/files/a382bc5a699158bb8a4bdd10fe78cd15/lirijatukezitid.pdf
    • http://jedwines.com/cmsCart//upload/file/fuxowuxugaj.pdf
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16084c58c53ced---gukowitopevoxoseg.pdf
    • https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/a74872f208aa646c4408d60085af6e08/11121802634.pdf
    • https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/83bc4f757724c0c79b0488ace913e584/bizevad.pdf
    • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608429ba1ccca---51490539034.pdf
    • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607ddbafce84c---13467528286.pdf
    • https://thehideawayresortpattaya.com/userfiles/files/37190162596.pdf
    • http://studiofapas.it/userfiles/files/64240603863.pdf
    • https://seerupit.dk/assens/file/76249168422.pdf
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/3c53c4404791d075ef2d75add014901a/13107509936.pdf
    • https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160928ec4e673d---80408042059.pdf
    • http://montpellier-business-plan.fr/mbp/upload/images/images/upload/ckfinder/gewewiwowasidulozixute.pdf
    • https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/16070ec8aa2ac0---jazag.pdf
    • https://espiber.cl/images/uploadedimages/file/10225993571.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=life+is+meaningless+meaning
    • 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_off0000fc73.bin
cf0739ba745c5485476952d78da985425ef397a276cded53f4a705a873b61125
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC73 10196 bytes
font_01_sfnt_off0001133f.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1133F 16792 bytes
font_02_sfnt_off00012b51.bin
de99ea3b113a2c9bb40214dc31bb880bfb16ad98c6c59be0236b203bc2920c61
pdf-font-stream PDF embedded font (sfnt) at offset 0x12B51 18400 bytes