Malicious PDF — malware analysis report

Static analysis result for SHA-256 affbc0e2f850e3e7…

MALICIOUS

PDF

74.8 KB Created: 2020-12-13 19:47:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 338a53ecf93e687f493fde116d48694e SHA-1: fa104887cd189877f4aa1fef628cd9c1c90782bc SHA-256: affbc0e2f850e3e782ecc915dd0f58a599d9e2f8d0ceef6c03746793c750dfca
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://gettraff.ru/wb?keyword=arjuna%20award%20winners%20list%202018%20pdf In PDF document text
    • https://tixusevonatafix.weebly.com/uploads/1/3/4/6/134611731/2852256.pdfIn PDF document text
    • https://bawuzuxagoju.weebly.com/uploads/1/3/4/3/134340420/4209857.pdfIn PDF document text
    • https://gupenuwod.weebly.com/uploads/1/3/4/5/134518336/a6f7436e0.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/7597c84a-2f3f-4fb9-aaac-9a6e36f2fbb4/83505615087.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68fedaf5-b6dd-43bc-a0f2-28c7d7e99089/49593476297.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/kilenepevizi.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/41664726439.pdfIn PDF document text
    • https://s3.amazonaws.com/gogunabones/star_wars_the_rise_of_skywalker_2019_torrents.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/958ec95b-cf78-4959-bb3e-94735b90eaad/kibupaf.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d650403f5353fd956949/t/5fc103de4f9837572003ad76/1606484959450/vezexakosoxulo.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_off0000e381.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE381 5712 bytes
SHA-256: 57c4868463af36f509df4faf324f514633e0b8167403a4485ebab64a145f172d
font_01_sfnt_off0000f71b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF71B 12072 bytes
SHA-256: c525ae48208d687d5fa971510fd3c50ad565f517b4c78ea33d6139632d3e9bc4