Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e75819b77de52d6…

MALICIOUS

PDF

71.2 KB Created: 2021-01-31 13:17:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: b6576670d10166d0e832d07475c5d787 SHA-1: 1f57eb9f43fb79932eff248fea30199058b13ad2 SHA-256: 7e75819b77de52d6b5066e77fb9bee524f44850cb10a69510e18c3626c2a6038
126 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The document body, though heavily obfuscated, contains references to 'rebel racing mod apk unlimited money android', suggesting a lure for potentially malicious downloads. Numerous external URLs were extracted, many pointing to disposable hosting or link farms, indicating a likely phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://seumenha.ru/wb?keyword=rebel%20racing%20mod%20apk%20unlimited%20money%20android PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4489839/normal_5fe63c27bc778.pdfIn PDF document text
    • https://cdn.sqhk.co/kokowoxiwi/Cjeojii/26203032906.pdfIn PDF document text
    • http://hotita.fun/asimov_the_last_question_summary3vmx7.pdfIn PDF document text
    • http://xavelodezazil.iblogger.org/48738207501.pdfIn PDF document text
    • https://nidatufibamukun.weebly.com/uploads/1/3/4/1/134131265/9747041.pdfIn PDF document text
    • https://cdn.sqhk.co/lupekute/w2Mgfx3/62868796517.pdfIn PDF document text
    • https://cdn.sqhk.co/vobipibomuk/h9iichb/93205831853.pdfIn PDF document text
    • https://wuzinetasinozud.weebly.com/uploads/1/3/1/6/131606123/3082057.pdfIn PDF document text
    • https://gitosupogule.weebly.com/uploads/1/3/2/7/132741155/b9bcb15308ac2e.pdfIn PDF document text
    • https://cdn.sqhk.co/nisonodoweb/aE5bggQ/download_ultra_hd_4k_wallpapers_for_laptop.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462694/normal_6000bdef0d9bf.pdfIn PDF document text
    • https://wisejagu.weebly.com/uploads/1/3/4/8/134881465/74e25a9017f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449618/normal_5fcd098d79241.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479460/normal_5ff2f48737644.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pudubekij.epizy.com/fmla_attendance_tracking_sheet.pdfIn PDF document text
    • http://lulikeleweworup.epizy.com/32861253918.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_off0000d645.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD645 5528 bytes
SHA-256: 7cdafcc227aaeefea7653033fded0a2dedc6297ddf25a4c8c42915e306ecf002
font_01_sfnt_off0000e901.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE901 11424 bytes
SHA-256: c0797ec84e79b17315195a77229a3ab0fa404d64601d9a6d54d30a3d7a8decf7

Open this report in the interactive analyzer, or submit your own file for analysis.