Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dcf4776d68c5eb0…

MALICIOUS

PDF

78.9 KB Created: 2021-06-06 01:58:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b77fdb7e3f79eb0cdfd4b55921f4d807 SHA-1: 881e9a32c428ed5b058f8e7638220fa196eda5af SHA-256: 2dcf4776d68c5eb0f1e4d11dc93412bf6a36894fd0d50b26ee950e58af6e591f
154 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to Weebly-hosted PDFs, suggesting a link farm or phishing operation. The ClamAV detection and ML classifier indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were extracted, the PDF structure and numerous external links are indicative of a malicious campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6404

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://irlanc.ru/pbw?utm_term=pokemon+platinum+randomizer+rom+mac
    • https://tenogamux.weebly.com/uploads/1/3/2/6/132681545/9403939.pdf
    • https://poraduke.weebly.com/uploads/1/3/4/3/134385775/pularapujopodot.pdf
    • https://cdn-cms.f-static.net/uploads/4446782/normal_60286db0aaeae.pdf
    • https://nozirurabi.weebly.com/uploads/1/3/0/7/130738896/nanodojigunewiwur.pdf
    • https://cdn-cms.f-static.net/uploads/4387712/normal_5fd15ec9c6e5e.pdf
    • https://fuburufogukedez.weebly.com/uploads/1/3/0/7/130776130/2690461.pdf
    • https://sezitoxonuga.weebly.com/uploads/1/3/4/8/134886233/nojulasaf.pdf
    • https://static.s123-cdn-static.com/uploads/4392860/normal_5fcdd21064c3a.pdf
    • https://nowitijot.weebly.com/uploads/1/3/4/7/134716658/7155086.pdf
    • https://cdn-cms.f-static.net/uploads/4426967/normal_603375c2e469a.pdf
    • https://zuvixane.weebly.com/uploads/1/3/0/9/130969636/suselazuz_mewumelogejo_jovekawinesum_piresifezowa.pdf
    • https://cdn-cms.f-static.net/uploads/4492892/normal_6016a57935ee5.pdf
    • https://cdn-cms.f-static.net/uploads/4407788/normal_6047db6bdbc0b.pdf
    • https://vetolotex.weebly.com/uploads/1/3/1/3/131379132/vinufatona.pdf
    • https://cdn-cms.f-static.net/uploads/4404296/normal_603919c501687.pdf
    • https://dadikokaw.weebly.com/uploads/1/3/5/3/135347495/safoniruk_fasujogefup.pdf
    • https://static.s123-cdn-static.com/uploads/4457876/normal_6008a1773d06f.pdf
    • https://cdn-cms.f-static.net/uploads/4454668/normal_6012bf0866b0e.pdf
    • https://duvujisukodat.weebly.com/uploads/1/3/4/6/134674851/bdfab8.pdf
    • https://static.s123-cdn-static.com/uploads/4373998/normal_5fec72e2c72e0.pdf
    • https://nigovazimosa.weebly.com/uploads/1/3/4/6/134636686/e52cea4acfe09a1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/6b55bb88-196f-4bb9-a00f-cf14d59d0918/how_to_pair_swann_smart_security_camera.pdf
    • https://uploads.strikinglycdn.com/files/8fe2e457-4eb6-430d-8e0a-026bdb9e7458/zoderedivivinereteta.pdf
    • https://uploads.strikinglycdn.com/files/7f6bd544-2e28-4d68-b2ef-0f53ef4c8c96/free_to_play_battle_royale_games_for_low_end_pc.pdf
    • https://uploads.strikinglycdn.com/files/fc592da4-40ef-4726-8e47-ba1d8159453a/2010_camaro_ss_hp_tuners.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010e0c.bin
da700e79c3eb047abbdac1d45f236435a5565ed8586b67b0c10f259a439c7f25
pdf-font-stream PDF embedded font (sfnt) at offset 0x10E0C 5156 bytes