Malicious PDF — malware analysis report

Static analysis result for SHA-256 72a10e802a4dc6c7…

MALICIOUS

PDF

86.9 KB Created: 2020-12-30 09:21:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 732abe65d8acf37991ff25d483d27c5a SHA-1: f083a6b79d5d529e73c1a3d893db1d8a35030550 SHA-256: 72a10e802a4dc6c7521f84fa19dca2cace2edd2982afe3bcfa5353e88b781088
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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-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://cctraff.ru/123?utm_term=cool+math+games+sticky+ninja+academy+unblocked In PDF document text
    • https://cdn.sqhk.co/jilanukubok/KQgeibs/free_water_parks_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/gewanunu/vjbjXjc/conquest_3_kingdoms_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410204/normal_5f9b58746e699.pdfIn PDF document text
    • https://cdn.sqhk.co/girewobo/hVhdhjv/sarukowetupawol.pdfIn PDF document text
    • https://cdn.sqhk.co/fedelubu/hd9uigM/birthday_gifts_for_grandpa_from_grandson.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.indictrans.orgIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1ef9b37-4deb-4726-a3f7-64996f6ee17b/sportster_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/kewuxejikiwe/designing_and_implementing_branding_strategies.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/fasirodobupewafibegeme.pdfIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/mufufomi.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/xifakuxamelanorekuwal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2720fe8-0fb2-4c0d-ab7b-daf1442a28a2/what_makes_a_good_sidekick.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/giwikibatavosirevafuwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91970593-e067-4c1e-b5aa-e351f619a59d/total_recall_movie_parents_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f71275fc-0174-4bfc-9521-c82bf87f12d6/license_plate_lookup_texas_owner.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41b91045-bfb7-4cd8-a08c-2d7123930a8d/incharge_electric_fort_worth.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/205eeaa4-07f1-4ca8-8918-9833cc7f885e/juniper_bgp_lu_configuration_example.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_off0000fb4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB4F 5544 bytes
SHA-256: 6f15631b18ac035444174e6b9d15bc721052f691e4f193b33c9f1effcf74c5f9
font_01_sfnt_off00010e0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E0C 8336 bytes
SHA-256: d3ec59fc29b0c83369689659163db1b2279360ef16595ffd350ff70d6d339f84
font_02_sfnt_off0001290d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1290D 11068 bytes
SHA-256: 7ae942c0ddf9c4693a7863ea1d40e2c6d75b1d3cb10d0a7521ade753d6e2cf63

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