Malicious PDF — malware analysis report

Static analysis result for SHA-256 425e3493b0748191…

MALICIOUS

PDF

64.0 KB Created: 2021-03-14 11:00:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b37b8a970f20cf02fdb22227a6a7870b SHA-1: 8ffaeb7299d45f3398e336a0f5386717ac597cfd SHA-256: 425e3493b0748191daf18d150d6637c11b2d68bef073c6c26cfce5eefa31e25c
154 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, suggesting a malicious intent to redirect users to potentially harmful websites. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a phishing or SEO manipulation tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8630

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-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
  • 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://pelibifir.ru/award?keyword=valores+universales+pdf
    • https://xebutikud.weebly.com/uploads/1/3/0/8/130813588/9636963.pdf
    • http://ipatovaalena.ru/fire_emblem_birthright_talent_guideszv3o.pdf
    • http://cupe1.ru/equivalent_fractions_worksheet_ks3_tes0vqm0.pdf
    • http://wisalifo.22web.org/tbd_full_form_in_finance.pdf
    • http://healthytrands.com/julian_calendar_to_gregorian_calendar_conversion23ahn.pdf
    • https://betozuwozoz.weebly.com/uploads/1/3/4/1/134108580/6294349.pdf
    • https://puxofigu.weebly.com/uploads/1/3/5/3/135347112/7854396.pdf
    • http://motivawka.online/dog_tracker_without_monthly_fee9szlc.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://nefijojutofad.rf.gd/wopanivujifu.pdf
    • https://uploads.strikinglycdn.com/files/08da5bf9-db54-4e16-9d04-1070e1931d66/51762177505.pdf
    • https://uploads.strikinglycdn.com/files/337b16f2-0356-4eee-8a7f-c74e80baeb3f/lexifatuvusarexalutu.pdf
    • https://dca540c6-954d-4243-9f09-0921753db957.filesusr.com/ugd/974a4e_a5a63678cb534eeda7b6a94768c87548.pdf?index=true
    • https://6cf80756-66c2-4d2e-b15d-ff1677cb7115.filesusr.com/ugd/2257e8_29088ef22fec48cd98018e0df51de518.pdf?index=true
    • https://uploads.strikinglycdn.com/files/7b2fde59-efcd-4a03-8743-294295ff621f/58651693787.pdf
    • http://sixiwojiti.epizy.com/13110974100.pdf
    • https://9b08d158-0e0f-4203-9b31-e1272d977b1c.filesusr.com/ugd/086daf_22f179ea382c45f7809e5a49545b5c74.pdf?index=true
    • https://uploads.strikinglycdn.com/files/8ae6c2ee-dc0d-4200-90c2-f571c48392d3/57143768450.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ded2.bin
7cf30705ec15d09d1a59ff50f71036491be472854bba93d5ec0a34e7cc7449d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDED2 4864 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.