Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e00dee74e64ed57…

MALICIOUS

PDF

75.0 KB Created: 2021-04-01 17:37:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46a1b5b2ab9ee64e004f3dc7c87e2e30 SHA-1: 4a397fceac05d7fd5780139c7d1a6b1b965a0e16 SHA-256: 0e00dee74e64ed5743af39628078b3818e0c7a91574f9bd6b72718dff3d15870
154 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a technique often used to create link farms for SEO manipulation or to redirect users to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic suggest the document is designed to drive traffic to a network of potentially malicious PDF files hosted on various domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8823

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://jumiwimov.ru/award?keyword=chaplet+of+the+holy+spirit+pdf
    • http://hr-insider.com/dotevixofet76fr.pdf
    • https://cdn-cms.f-static.net/uploads/4418575/normal_5fe90f6b7fab1.pdf
    • https://cdn-cms.f-static.net/uploads/4421341/normal_5fd177652b26c.pdf
    • https://niritopep.weebly.com/uploads/1/3/4/6/134634222/5450099.pdf
    • http://indital.space/49694564165g851l.pdf
    • https://vepenisa.weebly.com/uploads/1/3/4/3/134339982/vijitip.pdf
    • https://cdn-cms.f-static.net/uploads/4470387/normal_602a84059ed18.pdf
    • http://wulixiv.sportsontheweb.net/gorubutukaju.pdf
    • http://blacklaser.ru/1029037488jxajm.pdf
    • https://subogepaweb.weebly.com/uploads/1/3/2/3/132302814/nudasowop.pdf
    • https://cdn-cms.f-static.net/uploads/4480585/normal_602c03dec825b.pdf
    • http://sethel.xyz/why_is_my_pc_making_a_whirring_noiseoc5px.pdf
    • http://tryadasert.online/optiplex_7010_motherboard_typenuxa4.pdf
    • http://indital.fun/lg_smart_diagnosis_app_microwavelsa3g.pdf
    • http://tamakedesununod.mywebcommunity.org/sediaan_apusan_darah.pdf
    • https://cdn-cms.f-static.net/uploads/4384152/normal_6051af7cb19ae.pdf
    • http://zoneeuro.pro/ryobi_10_portable_table_saw_accessories3f7xp.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://widusop.atwebpages.com/23823653061.pdf
    • http://sofibimibojas.myartsonline.com/what_jobs_bachelors_degree_in_psychology.pdf
    • http://nabafutig.myartsonline.com/65117490325.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd2e.bin
e10428ea4bb5cab6da40eb9a072b0d57b9624743a67b8618153d921e1891be8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD2E 5136 bytes

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