Malicious PDF — malware analysis report

Static analysis result for SHA-256 98a6d0094d276b43…

MALICIOUS

PDF

79.2 KB Created: 2020-12-25 22:54:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 89a6f09a3b68d37184afe0095aab0f5e SHA-1: d3ffee21f15d8d2a0feef0047720352ebb8de48e SHA-256: 98a6d0094d276b4338c78cd0e110203e9a3d84d209b75c0d03ac3128d36bd902
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic identifying it as a link farm. One prominent URL, 'https://trafficel.ru/aws?utm_term=best+wap.+in+movie+2018+bollywood', is embedded and likely serves as a lure. The ClamAV detection and ML classifier strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafficel.ru/aws?utm_term=best+wap.+in+movie+2018+bollywood PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369655/normal_5f932e95a6cee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501193/normal_5fd7727d77024.pdfIn PDF document text
    • https://vakevugulipew.weebly.com/uploads/1/3/4/5/134507067/9ec14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476924/normal_5fbb73d75385a.pdfIn PDF document text
    • https://gomemetunugup.weebly.com/uploads/1/3/2/7/132712315/sotorirazajedi-turajotatufa-rosuw.pdfIn PDF document text
    • https://gajokazatiduker.weebly.com/uploads/1/3/4/3/134320060/wemixokasel_piror_taterozibaso.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499995/normal_5fdee574c3ac0.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/kozewuposoridil/naxemuwer.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/17581365592.pdfIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/aha_blood_pressure_guidelines_algorithm.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/zexolagazopodugoledimu.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_off0000f396.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF396 6004 bytes
SHA-256: 97f21a8cd708a017d1eab1a31118d2d746e529b231c984bceefd8bdeba99ae31
font_01_sfnt_off00010817.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10817 12416 bytes
SHA-256: cc4a18289f8ab2a0f31f5ea8e74af47a6d1893ccd442f018d21a6e2e0e32c771

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