Malicious PDF — malware analysis report

Static analysis result for SHA-256 8feb94e68a41df67…

MALICIOUS

PDF

69.4 KB Created: 2021-02-25 01:48:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 0716ef54f4c60b54ef6e281a58511a99 SHA-1: d5e7876e14b4af43c48b6d8b586baff6141470f9 SHA-256: 8feb94e68a41df67977fbb1003a63763a8aa3146da389a5213b62542904b0ea2
154 Risk Score

Malware Insights

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

The PDF file contains numerous external links, identified by the PDF_SEO_LINK_FARM heuristic, directing users to various websites. The document body, though heavily obfuscated, suggests a lure related to 'physical chemistry quantum mechanics study guide'. The presence of multiple unknown reputation URLs indicates a potential phishing or SEO spam campaign. ClamAV detection further supports the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9668

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://maypoin.ru/wix?keyword=physical+chemistry+quantum+mechanics+study+guide PDF link annotation
    • https://buwotudotep.weebly.com/uploads/1/3/1/6/131606539/7014415.pdfIn PDF document text
    • http://burrrhey.tech/71388545607flgnp.pdfIn PDF document text
    • http://wisopenudaris.22web.org/sigagemofenuj.pdfIn PDF document text
    • http://forkidsshop.online/la_phnomnologie_pour_les_nulsdkepi.pdfIn PDF document text
    • https://tewetakejuduz.weebly.com/uploads/1/3/2/7/132740850/ad533403a9.pdfIn PDF document text
    • https://sidatotivokusud.weebly.com/uploads/1/3/5/9/135959985/wawakapajikun.pdfIn PDF document text
    • http://morj.space/21178157761rgrwb.pdfIn PDF document text
    • https://duwobimisenuzo.weebly.com/uploads/1/3/4/6/134615726/8170529af0.pdfIn PDF document text
    • https://duwodalufe.weebly.com/uploads/1/3/3/9/133997525/5c266c34.pdfIn PDF document text
    • https://zarimuxeve.weebly.com/uploads/1/3/4/8/134897304/4343428.pdfIn PDF document text
    • https://ralirepiputup.weebly.com/uploads/1/3/4/8/134852471/gipazel-lufazurokobow-verid.pdfIn PDF document text
    • https://zewugijisisu.weebly.com/uploads/1/3/4/8/134885238/gamelebarejediko.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dorulusof/23156596247.pdfIn PDF document text
    • https://s3.amazonaws.com/bipovoromoj/project_portfolio_management_definition_pmi.pdfIn PDF document text
    • https://s3.amazonaws.com/rutufokedizon/namogawobatukuvi.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/chrome_bn_mi_nht.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A9 5580 bytes
SHA-256: dfefba7538d6bd31795b8f09ff5c8510b1b86db502c739e82da0237a109e2726

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