Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e8f7ac6617c2cab…

MALICIOUS

PDF

70.4 KB Created: 2021-05-14 23:32:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 35ee87bddaf4b7e4f34d1364de073d79 SHA-1: 155b630dbebaa357c9ad59feddaa2403fb603882 SHA-256: 5e8f7ac6617c2cabd46f572c06d484919e3c562669d85a3c0190f50e7ec41833
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains embedded URLs, one of which is flagged as potentially malicious. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. No scripts were extracted from this sample, but the presence of multiple embedded URLs suggests an attempt to redirect the user to a compromised or malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9827

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/c1844d5c2bac490c0a9e0c097a9ad10f/kaninivanuluzapogimodi.pdf
    • https://arenda1s.ru/wp-content/plugins/super-forms/uploads/php/files/b00a31883a6ab66bf939ad18e4bd44b8/11693541504.pdf
    • https://nanyangtextile.com/userfiles/file/80641667310.pdf
    • http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d56ea0a398---bemijixowepini.pdf
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160988894a0cae---34494168428.pdf
    • https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/5e6ede44415c44239a4e3877983a53d1/14707988564.pdf
    • https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/md21m8u044lbinh1e1nca4035i/42952273489.pdf
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/ohuh1hjgqjvl3qtcnii04dc133/wevuzonifalefaworitefe.pdf
    • https://grafitpoint.ru/wp-content/plugins/super-forms/uploads/php/files/144329b089ebd0b0854e955a76b4f43d/fejexurokitiforot.pdf
    • https://xn--arbeitskndigungsrecht-best-5zc.de/userfiles/file/87380602694.pdf
    • https://voolabs.com/wp-content/plugins/formcraft/file-upload/server/content/files/160794602d1839---sebipudomi.pdf
    • https://alkalacarservice.com/public_html/userfiles/file/26034875465.pdf
    • https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/268100aed45afb6bc6c911fbc4a9b671/jaxasutobuwetodarivuzelig.pdf
    • https://lamaisonducoeur.ca/upload/editor/file/zuwofamurufumiz.pdf
    • http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/160881adaa4a16---loxevajulepugemibukisal.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=vidrio+liquido+para+manualidades+precio
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc18.bin
6f6812c7dda29e710533561b5b2acb98e3d0e6d509497c76ff14c9fc020ca39f
pdf-font-stream PDF embedded font (sfnt) at offset 0xDC18 5308 bytes
font_01_sfnt_off0000ee10.bin
965d777764ff09b8046b3b1839aee2a85f76bfc191e792ea97e77d93cf3d2a7c
pdf-font-stream PDF embedded font (sfnt) at offset 0xEE10 11476 bytes