Malicious PDF — malware analysis report

Static analysis result for SHA-256 27db7ed51d4d2b93…

MALICIOUS

PDF

65.8 KB Created: 2020-11-30 01:15:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: bf346b66d7caea38a186f89fd84e1307 SHA-1: 815923bb6f09fdc0e8f554b06ae96d970f3e1419 SHA-256: 27db7ed51d4d2b93b1ee7866be11ce4ae487fe500a8c0e0c756f5afe9312fa72
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files hosted on services like Weebly and S3. The embedded URL in the document body, 'https://traffset.ru/123?utm_term=what+is+comcast+ref+code+s0a00+mean', suggests a potential phishing or traffic redirection scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffset.ru/123?utm_term=what+is+comcast+ref+code+s0a00+mean PDF link annotation
    • https://waxagenejefud.weebly.com/uploads/1/3/4/7/134712445/paputomeg.pdfIn PDF document text
    • https://bizavurodetilu.weebly.com/uploads/1/3/4/3/134391156/pebifoditejotunu.pdfIn PDF document text
    • https://suvojenedixu.weebly.com/uploads/1/3/4/3/134354738/53862c2b4aa3.pdfIn PDF document text
    • https://zujododa.weebly.com/uploads/1/3/4/6/134652654/lovofa.pdfIn PDF document text
    • https://besuxape.weebly.com/uploads/1/3/4/3/134374749/40947.pdfIn PDF document text
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/8260080.pdfIn PDF document text
    • https://ralikinu.weebly.com/uploads/1/3/4/8/134883141/72ebd.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/lovetijif/xem_phim_bo_hong_kong_long_tieng.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/fekomuresuwokodomig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb669faa-0d9d-41cd-aff5-f0c0e587e2ef/26695332621.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/tedomifokokopek.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/protoxyde_azote_formule_chimique.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_off0000c65f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC65F 5384 bytes
SHA-256: 042ff31c1238f389a186cac3de587c5983dddb62a9e8a42c2d4d8028417585c6
font_01_sfnt_off0000d88b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD88B 9948 bytes
SHA-256: 1d29f08289e6b6c844b0c91d0968caf4e3aa8c21719f01138e9488cc5d361c49

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