Malicious PDF — malware analysis report

Static analysis result for SHA-256 298ca7ccbfb43250…

MALICIOUS

PDF

77.8 KB Created: 2021-03-19 20:42:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aef25770ddb2d2d55291d3c6ac03a6f1 SHA-1: 563e3197a4a523c665d0cf606348e9b6ae81ed44 SHA-256: 298ca7ccbfb4325017058e53a43e99cccd12a4947ef489a00dadde950a6eac70
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. It contains an embedded URI pointing to 'zajinet.ru', which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://zajinet.ru/strik?utm_term=agile+estimating+and+planning+mike+cohn
    • http://dafusunefu.iblogger.org/netgear_wnr1000_v3_specs.pdf
    • https://cdn.sqhk.co/vidikusupegu/TkSgjYm/suwatiwemifuresogiraguxu.pdf
    • https://static.s123-cdn-static.com/uploads/4366005/normal_5fecd5cf760ac.pdf
    • https://cdn-cms.f-static.net/uploads/4424991/normal_601902573190e.pdf
    • https://cdn.sqhk.co/toxodimina/ggggIg3/google_chrome_for_android_4._1_apk.pdf
    • https://cdn.sqhk.co/legesizas/ifgiHhj/54055727189.pdf
    • https://cdn.sqhk.co/bofotabi/igArUhb/44524369172.pdf
    • https://static.s123-cdn-static.com/uploads/4375077/normal_6003319e390e1.pdf
    • https://cdn.sqhk.co/dojopaxitovi/A7icujc/home_design_3d_gold.pdf
    • https://cdn.sqhk.co/gudijupimeb/iizsjdo/flight_simulator_2020_vr.pdf
    • https://cdn.sqhk.co/bawusipa/iLZ3gge/pajuwosavog.pdf
    • https://cdn.sqhk.co/mekaxosur/iib3ghn/94253472211.pdf
    • https://cdn-cms.f-static.net/uploads/4379852/normal_60196713848ac.pdf
    • https://static.s123-cdn-static.com/uploads/4495264/normal_5ff777741d994.pdf
    • https://cdn.sqhk.co/fidumugovoz/FfjjLic/25948662185.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/63da2504-56f2-42f5-8ab6-a991df3ad079/zumujekufedodupekidoku.pdf
    • http://xagevudogitoti.epizy.com/33222431164.pdf
    • https://uploads.strikinglycdn.com/files/b6102690-b3de-4448-874c-1952eebf00a3/33425660979.pdf
    • http://wijijatalil.epizy.com/mamiya_rb67_127mm_lens_review.pdf
    • http://kaluzepo.rf.gd/assam_tet_online_form_2019.pdf
    • http://fegidil.rf.gd/genetic_counselling_in_dentistry.pdf
    • http://lidiremuvuzanas.rf.gd/albury_tv_guide.pdf
    • http://fivamoxopel.epizy.com/iphone_x_original_camera_apk.pdf
    • http://vokoribosid.rf.gd/65781579863.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_off0000f45e.bin
69c4d12d72f1a379406e8e40cda69e9c77293a26223daf7e268fff5d2759aa60
pdf-font-stream PDF embedded font (sfnt) at offset 0xF45E 5444 bytes
font_01_sfnt_off000106c5.bin
97b98c331d370e5253f78f14152895e91c8a4c6541bba9d203ac6f92c6234952
pdf-font-stream PDF embedded font (sfnt) at offset 0x106C5 10404 bytes