Malicious PDF — malware analysis report

Static analysis result for SHA-256 85b01b17d6ac1609…

MALICIOUS

PDF

77.8 KB Created: 2021-03-27 18:03:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb98d7913d1bc1f674ee5753e112f5a7 SHA-1: e0503862119551d3257dee5ec4098d700b4d293a SHA-256: 85b01b17d6ac16097ddfe86ab05aa9afdda7d5e840f55712f681374d9b5ac506
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into downloading further malware. The document body, though heavily obfuscated, contains references that align with a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://nipisod.ru/123?utm_term=taber%2527+s+medical+dictionary+apk
    • http://fimewovoko.getenjoyment.net/xubebugonevotifuxotegu.pdf
    • https://static.s123-cdn-static.com/uploads/4390660/normal_5ffd63a60e2ff.pdf
    • https://cdn-cms.f-static.net/uploads/4389366/normal_601d539b73f93.pdf
    • https://kenemujawov.weebly.com/uploads/1/3/4/6/134645985/luvexa.pdf
    • https://cdn.sqhk.co/tutabalero/iagchbH/bollywood_ringtone_2019_ki.pdf
    • https://kasasifu.weebly.com/uploads/1/3/4/6/134697732/e982ed2bd1d.pdf
    • https://gikanirirexenad.weebly.com/uploads/1/3/0/7/130776133/3627105.pdf
    • https://cdn.sqhk.co/navotezive/wd4ghXi/emporea-_pixel_federation_games.pdf
    • https://cdn-cms.f-static.net/uploads/4457005/normal_60214046375f2.pdf
    • https://static.s123-cdn-static.com/uploads/4374521/normal_60024c86ddcfb.pdf
    • https://cdn.sqhk.co/turovonunido/i5gdie5/kamurijif.pdf
    • https://juliraviwuziw.weebly.com/uploads/1/3/4/2/134267057/059af60fd.pdf
    • http://veruvipavopa.getenjoyment.net/the_merry_adventures_of_robin_hood_chapter_4_summary.pdf
    • https://static.s123-cdn-static.com/uploads/4484993/normal_5ff3ce41610ec.pdf
    • https://goxapixexaze.weebly.com/uploads/1/3/1/6/131607486/votezalosusadijebon.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://tuxefunuzire.atwebpages.com/zipusafapenejifet.pdf
    • https://s3.amazonaws.com/zategafozasiru/assassin_s_creed_unity_ps4_free.pdf
    • http://rosajeku.myartsonline.com/1056512939.pdf
    • https://s3.amazonaws.com/winumigutam/como_aclarar_el_ano_de_forma_casera.pdf
    • http://kulebosux.myartsonline.com/senonukoguziwepizalokemex.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4a5.bin
04f1e8a75d201b4bf5b43c4d9acf9320f91a3fb92ac8cdc043ce214596777a03
pdf-font-stream PDF embedded font (sfnt) at offset 0xE4A5 5296 bytes
font_01_sfnt_off0000f694.bin
96fe0a65cbeb4d253a6f813d3d66646c2bdbd4ec481222759236ed287cbb2426
pdf-font-stream PDF embedded font (sfnt) at offset 0xF694 10688 bytes
font_02_sfnt_off00011b39.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
pdf-font-stream PDF embedded font (sfnt) at offset 0x11B39 4324 bytes