Malicious PDF — malware analysis report

Static analysis result for SHA-256 eec9c914d3362bf8…

MALICIOUS

PDF

81.5 KB Created: 2021-03-14 14:41:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f641a0a5ae8fe005d585e4633b0231e4 SHA-1: 7e769f98fb6344b65edbd6ec02170e74d82270a7 SHA-256: eec9c914d3362bf823306df73aa009236739f855564ccf981212b8a5a948b654
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL `https://soxebez.ru/award?keyword=math+key+words+pdf` suggests a phishing or scam lure, attempting to trick users into visiting a malicious site. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic point towards potential exploitation or redirection, aligning with common phishing techniques.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • 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://soxebez.ru/award?keyword=math+key+words+pdf
    • https://cdn.sqhk.co/xejudawadoni/izia2yp/17249233487.pdf
    • https://static.s123-cdn-static.com/uploads/4446263/normal_5fcd7a875de2e.pdf
    • https://static.s123-cdn-static.com/uploads/4367275/normal_5fddf4c18f83d.pdf
    • http://rekipeva.iblogger.org/zumopukalujamivonaz.pdf
    • https://cdn-cms.f-static.net/uploads/4368747/normal_5fd7b523d4150.pdf
    • https://cdn.sqhk.co/zajujinul/gihfggm/bmx_kid_game_download_in_uptodown.pdf
    • https://cdn-cms.f-static.net/uploads/4408703/normal_601758f71b3d8.pdf
    • https://cdn-cms.f-static.net/uploads/4423145/normal_60248d76ed30c.pdf
    • https://cdn-cms.f-static.net/uploads/4410953/normal_60485cfabaa61.pdf
    • https://static.s123-cdn-static.com/uploads/4480387/normal_5ffac2a96aef3.pdf
    • https://cdn-cms.f-static.net/uploads/4389376/normal_603545d9191b4.pdf
    • https://cdn.sqhk.co/titolegun/if3waih/sosupibuvatoputanerufow.pdf
    • https://cdn-cms.f-static.net/uploads/4426816/normal_601208abaa742.pdf
    • https://cdn-cms.f-static.net/uploads/4369514/normal_5fd6c2f229f49.pdf
    • https://cdn.sqhk.co/jolodovi/heGDCst/zaviseponipoma.pdf
    • https://cdn-cms.f-static.net/uploads/4370987/normal_601fde436bdd5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vufeligix.rf.gd/indentured_servitude_and_slavery_packet_answers.pdf
    • http://gawowupakifofe.rf.gd/problem_and_solution_text_structure_slideshare.pdf
    • http://zofikexegugimum.rf.gd/80450978652.pdf
    • http://perepidowowavam.epizy.com/48067190843.pdf
    • http://zufagubiles.epizy.com/69930786428.pdf
    • http://memenusaduso.rf.gd/kruger_park_guided_game_drives.pdf
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ff8b.bin
50ca3c16253c7c9fbb6d72bc16cdb222fa302a893a7c8b5d508ae994910a60e8
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF8B 5360 bytes
font_01_sfnt_off000111e5.bin
4ed4869849b03e597a5be7ff0574eed19fbeecde89ddc1a69793c1cfc73c895c
pdf-font-stream PDF embedded font (sfnt) at offset 0x111E5 11336 bytes