Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb97f48ca99565cf…

MALICIOUS

PDF

118.9 KB Created: 2021-09-04 21:29:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: aa5066e6117e11f3b66e5d9e3479b86e SHA-1: f8bb70667ffdec90aa90b87e06eea93a3a04802c SHA-256: bb97f48ca99565cf923fc93655b123f1d3b1fe26be3ca5226ddd1a2006d7aeec
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and exhibits characteristics of a phishing or malware distribution lure. It contains embedded JavaScript and numerous external URIs, many of which point to compromised or disposable hosting, suggesting an attempt to redirect users to malicious content. The presence of embedded JavaScript indicates potential for further malicious actions, such as downloading additional payloads.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3117

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160fafc7dc75e3---xuduzu.pdf In PDF document text
    • http://xn--80akoseq9f.xn--p1ai/userfiles/file/22616450291.pdfIn PDF document text
    • https://www.accidentinjuryalbuquerque.com/wp-content/plugins/super-forms/uploads/php/files/ejpisci293kui0dkrdgdficskg/pokote.pdfIn PDF document text
    • http://fabtur.ru/upload/files/8310061059.pdfIn PDF document text
    • http://fantalife.nl/userfiles/file/64708967876.pdfIn PDF document text
    • https://ddshower.com/ckfinder/userfiles/files/tolufudexaxuluzuwuluzase.pdfIn PDF document text
    • https://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/d96193c7609e87ebdf41c79a77d5808c/fagaz.pdfIn PDF document text
    • http://agcslohian.com/userfiles/file/11308166680.pdfIn PDF document text
    • https://minipowerpack.net/upload/files/vojebuzugoxisabunufe.pdfIn PDF document text
    • https://papiratisk.cz/soubory/18939086552.pdfIn PDF document text
    • https://travolution.travel/wp-content/plugins/super-forms/uploads/php/files/3de8cf30840d6e6ed2b82451dfdb23b7/73707358707.pdfIn PDF document text
    • http://www.teeintact.com/admin/fckeditor/editor/filemanager/connectors/php/img/file/mopevinovada.pdfIn PDF document text
    • https://dietacud.eu/upload/file/89736939770.pdfIn PDF document text
    • http://innotec-industrie.be/userfiles/file/lenatol.pdfIn PDF document text
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609da07cc1f8b---guparakejubidekonate.pdfIn PDF document text
    • https://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/gq91j11bkp4jrunlcdacshos5u/vunidenakekofixewiwo.pdfIn PDF document text
    • http://pelejas.com/IMAGENS/CKFINDER/files/jisulosolaza.pdfIn PDF document text
    • http://iaestedresden.de/userfiles/file/16358245025.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0fe73712ed---pegilenabu.pdfIn PDF document text
    • http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609edae93ca14---runezidep.pdfIn PDF document text
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/160e137622d0c4---xufozukupogisosabadizu.pdfIn PDF document text
    • http://coffee33.ru/archive/file/8223847915.pdfIn PDF document text
    • http://drapikowski.pl/uploaded/fck_files/file/57166151932.pdfIn PDF document text
    • https://otartufo.com/ckfinder/tartufofiles/files/besune.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=spinoza+etica+demostrada+segun+el+orden+geometrico+pdfPDF link annotation
    • https://mediacentre.heathrow.com/js/ckfinder/userfiles/files/78119421065.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00019ed7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19ED7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001b6ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B6EE 11200 bytes
SHA-256: 905c3f7a9bff7578727fabd34b9d5aee6612a6d6676d91633e93b5ce28bfdc3b