Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1f15dc0ae7bf82d…

MALICIOUS

PDF

70.4 KB Created: 2020-11-11 16:51:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 7d06f82ecf2fbd01e6a296a8f6746989 SHA-1: 90d8fc639c9845e57086c17c05450c2616ac80cc SHA-256: e1f15dc0ae7bf82d29b8ec556b64e9d8b7b1d6b8fd3e0df76477c0b94d5c8d6a
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 0.9974

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://traffmen.ru/123?utm_term=moscow+metro+2+reddit In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365525/normal_5f8a6eb345581.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445103/normal_5fa4f039a42d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387244/normal_5f9000d7ad35e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412775/normal_5faa720d92db2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377678/normal_5fa0a84c12def.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365547/normal_5f86fb122ded8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/giwurode/oru_kuppai_kathai_full_movie_watch_online.pdfIn PDF document text
    • https://s3.amazonaws.com/nafoxuda/allama_iqbal.pdfIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/the_boy_in_striped_pajamas.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB73 4756 bytes
SHA-256: 06e200c5177a1386aec807784006431a608bcd6efa500a3deaa7b635dafcd5e0
font_01_sfnt_off0000dbb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBB2 10436 bytes
SHA-256: 004dd736108a55b77c2725b1acfdfa9720766e215b96b4f5abccb836819f0c85
font_02_sfnt_off0000ff67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF67 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378