Malicious PDF — malware analysis report

Static analysis result for SHA-256 72f9617f14d93325…

MALICIOUS

PDF

79.3 KB Created: 2021-02-24 21:52:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 554b423ffe2b393bb07e7541b91417cf SHA-1: 517e8198efd611c9ed93b2587226575a43d8c77e SHA-256: 72f9617f14d93325c77f8dc3df24606090ef5c48eb4030f3eac45399279e6cae
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 PDF contains an external URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to trick the user into visiting a malicious URL, consistent with phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/wix?keyword=westland+survival+guide
    • http://autoupgrade.website/desifotokudevderl.pdf
    • https://waragiteket.weebly.com/uploads/1/3/4/0/134016771/9279608.pdf
    • http://depofukug.iblogger.org/62096299764.pdf
    • https://disaximineta.weebly.com/uploads/1/3/4/8/134883765/1eb515c9fbc.pdf
    • http://kamini33.ru/using_commas_in_compound_sentences_worksheetseycw4.pdf
    • https://cdn.sqhk.co/rapawaferew/9Lf7Yha/filov.pdf
    • http://lnstagramverifiedsbadgesforms.com/tibunanogowulefijimupabaxzmaao.pdf
    • https://cdn-cms.f-static.net/uploads/4457839/normal_5fd6ee56eb847.pdf
    • https://dujapiloxi.weebly.com/uploads/1/3/1/8/131857305/pazolubesefobaw_vogofa_gowinu_xofizekuzuwopa.pdf
    • https://cdn.sqhk.co/seseniluvus/WJihEXY/cats_crash_arena_turbo_stars_hack_apk.pdf
    • http://gufutaca5.xyz/tujezufusasubadatedot2yur9.pdf
    • https://cdn-cms.f-static.net/uploads/4465397/normal_6010aa6ad684e.pdf
    • http://shoop-fr.ru/v_shred_reviews_endomorphg5haq.pdf
    • https://cdn.sqhk.co/golemejexeno/jBihbif/ring_my_bell_spanish_lyrics.pdf
    • https://bukowimulo.weebly.com/uploads/1/3/1/4/131407836/486a830e53017c.pdf
    • https://lasasozizo.weebly.com/uploads/1/3/4/0/134041343/1227699.pdf
    • https://cdn-cms.f-static.net/uploads/4451363/normal_602e7dd270ae2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dinelak.rf.gd/bicycle_built_for_two_piano_sheet_music.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_off0000fa29.bin
ef06377c4c52436d2a06333d1f7ecdda3db6d2641175532b347dc18972586fad
pdf-font-stream PDF embedded font (sfnt) at offset 0xFA29 5064 bytes
font_01_sfnt_off00010b83.bin
dfd64dc5169deb6e79256c9bf29c2e3fc34e8ac2b513f8131150f85a356e0a93
pdf-font-stream PDF embedded font (sfnt) at offset 0x10B83 10752 bytes