Malicious PDF — malware analysis report

Static analysis result for SHA-256 13bf1f086d87ab9d…

MALICIOUS

PDF

74.5 KB Created: 2021-02-17 23:39:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 246e9694cb548af18fb66cbff2ed23aa SHA-1: 77eeb188672dd06b99cd96e9b2b69495b7c43405 SHA-256: 13bf1f086d87ab9d409f5634a136d6022b93df95ced3111c4f25b8cbc582219e
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for phishing or distributing further malware. The ClamAV detection and ML classifier strongly indicate malicious intent. The presence of embedded URLs and the heuristic 'PDF_SEO_LINK_FARM' suggest the document is designed to redirect users to potentially harmful sites, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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
  • 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://seumenha.ru/wix?keyword=gold%2527s+gym+cycle+trainer+390r+user+manual PDF link annotation
    • http://perevod24-card2card.site/electronics_for_kidsk3po8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404313/normal_6005c0bd1b9c2.pdfIn PDF document text
    • http://all-system7.work/redofopimalorafizu7igha.pdfIn PDF document text
    • http://prodit.space/cv_format_for_job_filepkhal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392442/normal_5fd7c1a65fedf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474211/normal_5ff2a1e124ba3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421612/normal_600ff307d5afc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385038/normal_5fcb15da29318.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406473/normal_5fe1a1678be2b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406169/normal_5ff1cdd04cddf.pdfIn PDF document text
    • https://pasuliwipo.weebly.com/uploads/1/3/1/4/131452824/e0bff22efb8ce0.pdfIn PDF document text
    • http://persequen.com/tyrion_lannister_father_deathm4glw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369760/normal_6021abf4b6c8b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mugosovexu.epizy.com/angular_material_datepicker_set_date_format.pdfIn PDF document text
    • http://kusegipe.epizy.com/9609343342.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/cydia_ios_9._3._5.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1BE 5888 bytes
SHA-256: b79043d4d4da2a541daf78a0d075fc5ae897a41dcacc823704a90f8fb3713515
font_01_sfnt_off0000f5bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5BC 11872 bytes
SHA-256: c71f97752854b91ec3869f9a9a756f14c4d09bda81c1c5e5641221b136d4f43d

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