Malicious PDF — malware analysis report

Static analysis result for SHA-256 750228101458055e…

MALICIOUS

PDF

85.9 KB Created: 2021-01-03 09:31:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 780348b973b896ca6a46548122e89ed7 SHA-1: 88462c8d634ad8b936181b755cb7e4d312d136db SHA-256: 750228101458055e830790457c60b4a8ee3daef609382a388972ae36fc6ff63f
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is disguised as a lure for game cheats. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL is the primary indicator of compromise, likely leading to a phishing page or a second-stage malware download.

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/wb?keyword=sims%203%20mobile%20cheats%20android In PDF document text
    • https://cdn-cms.f-static.net/uploads/4387244/normal_5fa48dae5f305.pdfIn PDF document text
    • https://cdn.sqhk.co/fejavegiwo/ogibhi0/hero_wars_super_stickman_defense_online.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475729/normal_5fb025eb4060d.pdfIn PDF document text
    • https://cdn.sqhk.co/modajili/hgbHiiu/14127207761.pdfIn PDF document text
    • https://cdn.sqhk.co/zixajofazadi/EfgfihP/faban.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwonesi/idgimfS/ice_cream_2_horror_game_download_pc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426071/normal_5fcee0d8dc745.pdfIn PDF document text
    • https://cdn.sqhk.co/monasomeb/hifFgfJ/shake_the_monkey_game_2.pdfIn PDF document text
    • https://cdn.sqhk.co/xubulozirod/jjcjdVs/football_manager_2020_touch_android_requirements.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495686/normal_5fb54ed55ad14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417422/normal_5fdae79ae72d1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/ladiwuzetawedi/vepinerijoxasomij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a375dfdf-9ff8-4d0f-85f2-551a8de1f100/43927419479.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_off0001105b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1105B 5588 bytes
SHA-256: 49e4de8cf5b701d29086ddc6b382402b0a3bdde7306fb2ae3a9fce2b3e4ad305
font_01_sfnt_off00012322.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12322 11188 bytes
SHA-256: 288d1d6eaf796d8cf71b76c2d99959310f709f929ddd232c0c252a91ae5f77ed

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