Malicious PDF — malware analysis report

Static analysis result for SHA-256 fabd3d90af423459…

MALICIOUS

PDF

74.1 KB Created: 2021-05-20 06:54:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: db068b861a1a81cfe824ecfe9cdde214 SHA-1: 68c081c6a2886e1f384151799503709a534c45c5 SHA-256: fabd3d90af4234596b1d450fb18a337bf9e2cc354da3cd593a3f44958eef4b87
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an external URI pointing to 'bologen.ru', which is flagged as suspicious. Although no scripts were explicitly extracted, the PDF structure and the presence of embedded URLs suggest an attempt to redirect the user to a malicious site, likely for phishing or to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/strik?utm_term=une+fois+pour+toutes+pdf
    • https://static.s123-cdn-static.com/uploads/4426260/normal_5fc85e5cc9a61.pdf
    • https://static.s123-cdn-static.com/uploads/4467589/normal_5fc6752356454.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tikoweravisixu/how_to_check_spark_on_tecumseh_engine.pdf
    • https://s3.amazonaws.com/dorobukasawituw/5175689163.pdf
    • https://s3.amazonaws.com/lukepepe/what_is_the_remote_control_code_for_a_vizio_tv.pdf
    • https://s3.amazonaws.com/zepifudoxapo/who_actually_pays_the_judgements_on_judge_judy.pdf
    • https://s3.amazonaws.com/fedufiporara/the_power_of_love_celine_dion_songtext_deutsch.pdf
    • https://s3.amazonaws.com/fumiposamisur/gemokaduwopevenemewede.pdf
    • https://uploads.strikinglycdn.com/files/ff3e2342-ba7e-405d-9fae-5b3628978e5d/lol_patch_10.24_release.pdf
    • https://s3.amazonaws.com/jiwisigetizoxif/online_to_dwg_converter.pdf
    • https://s3.amazonaws.com/gulapore/98645185453.pdf
    • https://uploads.strikinglycdn.com/files/08ffbdb5-6764-40f0-895b-521652bdc50a/the_killing_joke_comic_age_rating.pdf
    • https://uploads.strikinglycdn.com/files/7723f841-086e-4fba-ba95-afb7d97d75a3/57489074544.pdf
    • https://s3.amazonaws.com/titugome/sixobumujamesape.pdf
    • https://s3.amazonaws.com/bejikefowu/zisamo.pdf
    • https://uploads.strikinglycdn.com/files/253086e8-d989-44fb-a0af-7d4bf638aa43/tifiwolufivelegafep.pdf
    • https://s3.amazonaws.com/rogugagatuf/psalm_23_1-3_nkjv.pdf
    • https://uploads.strikinglycdn.com/files/6c01ff69-fbc8-409c-8ddd-85aeef8c6e42/zagg_ipad_pro_11_keyboard_review.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_off0000e1d0.bin
b77f6fa35c27ada2033fb04eac8bf6e98265a92ad8ee885bac6eca160a8b90b9
pdf-font-stream PDF embedded font (sfnt) at offset 0xE1D0 4784 bytes
font_01_sfnt_off0000f231.bin
4ea3cb58803c84b488d5bbd74f4ef2ecc58c67acc93e67ac8b4e0b2c0fd9a30c
pdf-font-stream PDF embedded font (sfnt) at offset 0xF231 12428 bytes