Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3b10e1357d186a9…

MALICIOUS

PDF

63.4 KB Created: 2021-01-05 20:43:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 9d2c16a2a1011800b84f6f6af82c6c02 SHA-1: d0f262ce9232eb731956e9c3b65aa0801cccfa5f SHA-256: e3b10e1357d186a98f3b16348c6a11e5b2f60367016a4ae05d8533640a7c1835
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. The embedded URL `https://traffking.ru/aws?utm_term=unacceptable+condition+video` is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffking.ru/aws?utm_term=unacceptable+condition+video In PDF document text
    • https://cdn-cms.f-static.net/uploads/4446494/normal_5fe8901a891b2.pdfIn PDF document text
    • https://pevugubak.weebly.com/uploads/1/3/2/7/132740457/4340579.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449615/normal_5fd3ced7df65f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451766/normal_5fceba42dfe73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453891/normal_5fa7e7da5fd63.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481665/normal_5fc219471dcec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412160/normal_5fd18ff1c6681.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488314/normal_5ff255c88bb4a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/466208e0-cdbf-42ff-9aba-f7c2927e63bf/nexipelanuzi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11565c91-a30e-4d42-ab44-7c115e108447/saxaxamovomo.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_off0000bf85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF85 4984 bytes
SHA-256: 799d5ec30feec93bb9f8b245b5230f65c84a3bf7441670a08860a23c71ce5423
font_01_sfnt_off0000d08a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD08A 9592 bytes
SHA-256: fd940b43d7353785c9a1586b17f7e985b7da76b49964e42d4b617170ce471dbe