Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d0b773030ac3a01…

MALICIOUS

PDF

228.2 KB Created: 2021-06-01 11:54:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42e443e1a72c7b9027c04a1b81c05f62 SHA-1: 112358f93b77c117a45391d4fc7f1e943e117633 SHA-256: 0d0b773030ac3a01b2f5be6f44f556769deb2112041c71bf456ebaa7bc10f628
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely used to host malicious content or redirect users. The document body, though heavily obfuscated, suggests a lure related to 'Grigori Grabovoi codes' to entice users to visit the external URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://pistant.ru/pbw?utm_term=grigori+grabovoi+codes+book
    • https://cdn-cms.f-static.net/uploads/4450042/normal_60688e8b2eb89.pdf
    • https://senaduwofajix.weebly.com/uploads/1/3/0/7/130775021/8019248.pdf
    • https://wuwinotidewav.weebly.com/uploads/1/3/5/3/135349353/fd29062beb.pdf
    • https://static.s123-cdn-static.com/uploads/4450438/normal_5fff0a5a3ccd4.pdf
    • https://lobududovidaxu.weebly.com/uploads/1/3/3/9/133997350/6334950.pdf
    • https://static.s123-cdn-static.com/uploads/4377928/normal_5ffc0f7152eb0.pdf
    • https://bivamotitujodo.weebly.com/uploads/1/3/4/7/134712473/45d0efd6da403.pdf
    • https://cdn-cms.f-static.net/uploads/4371799/normal_606e2d3d6818e.pdf
    • https://cdn-cms.f-static.net/uploads/4452587/normal_604d7a7a618e8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bemulopawed.pbworks.com/w/file/fetch/144448449/bufirivomili.pdf
    • http://gosirata.pbworks.com/w/file/fetch/144439386/forex_trading_tips_secrets.pdf
    • https://uploads.strikinglycdn.com/files/afb7e338-40af-40d7-8328-0b37dab130d3/how_to_use_pellon_tear_away_stabilizer.pdf
    • http://gulisapil.pbworks.com/w/file/fetch/144419478/2399264410.pdf
    • http://tisowowuduwe.pbworks.com/f/ridos.pdf
    • http://fadoposapat.pbworks.com/f/66350136435.pdf
    • http://xorunezagu.pbworks.com/f/xixozi.pdf
    • http://natizasex.pbworks.com/f/golf_buddy_voice_2_charging_instructions.pdf
    • http://noxixap.pbworks.com/w/file/fetch/144426375/pdf_calendario_2020_mexico_para_imprimir_gratis_chile.pdf
    • http://pezeliv.pbworks.com/f/wagunibi.pdf
    • https://uploads.strikinglycdn.com/files/ea0d94e8-b3be-4eda-b076-523d96cedf1a/wibatimak.pdf
    • http://liguduper.pbworks.com/f/92898913635.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_off000345dc.bin
486c5f2ce8a726a101d77b0a650fa95abb3a62ed2730fb47703daf960a418d6b
pdf-font-stream PDF embedded font (sfnt) at offset 0x345DC 5368 bytes
font_01_sfnt_off0003583c.bin
a2e12e8453f228a165b19aa734dfd11ca675cfc39b8721dd10d3ba13db14bcba
pdf-font-stream PDF embedded font (sfnt) at offset 0x3583C 13368 bytes