Malicious PDF — malware analysis report

Static analysis result for SHA-256 87a48b125d415756…

MALICIOUS

PDF

81.2 KB Created: 2021-04-19 15:16:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc8bc60914c3cad953214af9add6d981 SHA-1: 77d3db894b6f8c1868378d341da73349ae15023f SHA-256: 87a48b125d4157563a330114a24670b96e8459164268c5261dc3bd95e7b2bf29
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site or download further malware. The document body, though heavily obfuscated, suggests a lure related to product information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/strik?utm_term=cub+cadet+lt1050+key+switch
    • https://static.s123-cdn-static.com/uploads/4380382/normal_5fff6021bcd5f.pdf
    • https://xoverepidagagit.weebly.com/uploads/1/3/4/4/134469055/8765800.pdf
    • https://cdn.sqhk.co/luwokiseg/eNnhjpK/mabem.pdf
    • https://cdn.sqhk.co/kadunila/icPnQjg/cobb_theatres_tyrone_mall.pdf
    • https://cdn-cms.f-static.net/uploads/4444644/normal_606264191b044.pdf
    • http://lnstagramcopyrighthelps.com/berazeg2dh6p.pdf
    • https://cdn-cms.f-static.net/uploads/4381536/normal_606d4059c3cd0.pdf
    • http://linufiwanekume.scienceontheweb.net/definition_of_communication_file.pdf
    • https://cdn.sqhk.co/kimazibo/5khgjaL/indycar_2020_aeroscreen.pdf
    • https://veriketosamu.weebly.com/uploads/1/3/4/6/134675732/fiwugomixo.pdf
    • https://wosefekolejareb.weebly.com/uploads/1/3/4/3/134340916/loxidemesuj.pdf
    • http://my-favshopg.online/turnigy_9xr_pro_reviewc26e8.pdf
    • http://magexaxajatadog.getenjoyment.net/3024828477.pdf
    • https://cdn.sqhk.co/fuxivuxovu/ANjc3jd/soccer_goalkeeper_penalty_kick_rules.pdf
    • https://dibekojiworibo.weebly.com/uploads/1/3/1/6/131637919/a73a67a8a7.pdf
    • https://cdn-cms.f-static.net/uploads/4428033/normal_5fe6b7137f59b.pdf
    • http://xeeewq.xyz/easy_pumpkin_carving_face_templates7lalg.pdf
    • https://pafufido.weebly.com/uploads/1/3/1/4/131407890/kagebele-vamape.pdf
    • https://cdn.sqhk.co/balapakufogo/ie5pNPs/ninja_run_adventure_mod_apk_unlimited_gems.pdf
    • https://cdn.sqhk.co/nojedajoze/i0Oidia/91671110314.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0dc.bin
a76a83086a665447db22f1b2299aac37e948fc4a5d96aa8d4da4562e81355b75
pdf-font-stream PDF embedded font (sfnt) at offset 0xF0DC 5336 bytes
font_01_sfnt_off00010328.bin
401a7c76b1a528cf6cffe49376f2db4f9748573e4a8418aa3202063b30b21652
pdf-font-stream PDF embedded font (sfnt) at offset 0x10328 11060 bytes
font_02_sfnt_off000128de.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x128DE 4324 bytes