Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5bfa01807c9716f…

MALICIOUS

PDF

90.9 KB Created: 2021-06-30 05:59:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 0bd7edf27133c85596e1b6506525090f SHA-1: 7892a5b8a8c864341b67631e8eac95e321dfd352 SHA-256: a5bfa01807c9716f3a0a6acb851030205e338405c57a57fe5fc3d928f4c89101
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The file contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm or phishing lure. The primary purpose appears to be directing users to potentially malicious or compromised URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080890cb6066---16689777401.pdf
    • https://bechtoldpaving.com/wp-content/plugins/super-forms/uploads/php/files/1aff6c486159f22f03e11cfc72968ae9/22059801688.pdf
    • http://generaltubi.com/container/ckfiles/files/zezutusovawafuwedifasinu.pdf
    • https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c7c5ce1216---nuzonerivogelefezaj.pdf
    • https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/cukf56ir6c4nddvp1q9bleo3r7/50926679671.pdf
    • https://www.breastcancerfoundation.in/wp-content/plugins/super-forms/uploads/php/files/21239795cf9c2ee505dd420b6d578fec/fubesaj.pdf
    • https://www.aserspa.net/wp-content/plugins/super-forms/uploads/php/files/elogh4o28j9sp9bjvvo477i3r5/dipovozibesupibenugeripim.pdf
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/1608bd1e931660---rubir.pdf
    • https://alatheir.com/atheirwsfiles/file/kagakogopabisavokaxuw.pdf
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1607e829867b2e---85833889906.pdf
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160896e802d153---rexekojexaperipu.pdf
    • http://inwallendorf.de/userfiles/file/dosejadexefizezigokodajol.pdf
    • http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/1607d91740d7f3---75961265826.pdf
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078dc962059a---11249820175.pdf
    • https://voolabs.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082b8ad22690---42893985661.pdf
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/g460n2h9n5og1gts71canprs4d/xodufijufudemofati.pdf
    • https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/ea461d589e222d9ee5f80b2c63d10b4b/sofedoma.pdf
    • https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160761d7dd69a7---kixikepekurerala.pdf
    • http://solyaris.pro/admin/ckfinder/userfiles/files/7764750789.pdf
    • http://crackershrimp.com/file_media/file_image/file/79672512089.pdf
    • https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/436e2bb816a6f505385926fb75720d8a/rolar.pdf
    • http://caythuocdangian.net/images/files/78794623813.pdf
    • https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/nt9qdbgcteklatjdoedd3bu3e5/risixadefikuwuxeva.pdf
    • https://www.crossfitparamaribo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6ea6647386---tesabiguxabatoxuv.pdf
    • https://doellefjelde-mussemarked.dk/images/newsmail/file/lixab.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=jnana+meaning+in+english
    • 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_off0000ff7c.bin
fdce9f24e8bfb45193ba8f333dc9bccba7e4a82393de537cc4b1066e6dd20bbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF7C 10228 bytes
font_01_sfnt_off00011627.bin
f212696143c5718aee61b272ab5b73c353a207b883aef1d638345e7f82abaa96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11627 18764 bytes
font_02_sfnt_off0001445c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1445C 16792 bytes

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