Malicious PDF — malware analysis report

Static analysis result for SHA-256 82af72dee04e34da…

MALICIOUS

PDF

76.5 KB Created: 2020-11-13 20:04:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 59dd3f06cb245806c3c73fe8434f103a SHA-1: 9cc2b1efccc816fffccb2f2fe291724b7b9b6ab8 SHA-256: 82af72dee04e34da85828963db51f136ed2883753a269613e469795283d2691a
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 0.9980

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ggtraff.ru/123?utm_term=the+swap+full+movie+disney+channel+online+free In PDF document text
    • https://cdn-cms.f-static.net/uploads/4419206/normal_5f98f7dd6aeaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388407/normal_5f8d893b5e50b.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/9d3f5d17-7a5d-4e42-af6f-1f348bc21f0a/86279876563.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/ranalulibomafujejelade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8278fa8b-a1d1-4063-af72-4606cd70fe19/kikizir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f6a6823-a8be-496f-a388-72b7f0d96244/alpha_males_tumblr.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82050a58-e20e-49d1-8ca9-7f367a95e6da/21085031177.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/278fee13-9390-45f2-82c1-8bf2d3d06bef/full_guitar_chords_chart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa90ffd6-c659-4304-baee-396b965b0ac1/alternative_breaks_at_ucsd.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_off0000ec8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC8A 5596 bytes
SHA-256: c0f2f2d31257ccc3ffce8b23fd84d0dcbe0df660ee4408ab41d6e885ede25e0a
font_01_sfnt_off0000ff89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF89 11216 bytes
SHA-256: fff801b5847386546f75d2b5cf6983c752015d272988943d6fa752e98526778a