Malicious PDF — malware analysis report

Static analysis result for SHA-256 69bb8bc494622c77…

MALICIOUS

PDF

114.8 KB Created: 2021-03-20 16:53:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 05d1e0d4cabb19b30ca43e4e54cdad4e SHA-1: f97005eb87a5ffe45e9a964e204a7a5138e880f0 SHA-256: 69bb8bc494622c7703e9cbb985f51723e5b60c7ac4419bdf1c29714f87278fb0
126 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, specifically as a phishing trojan. It contains numerous embedded URLs pointing to disposable domains, indicating a link farm designed to redirect users to potentially harmful content. The presence of external URIs and the link farm heuristic strongly suggest an attempt to distribute malware or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://maypoin.ru/wix?keyword=cool+meme+names PDF link annotation
    • http://sijiwepi.mypressonline.com/the_game_movie_1997_netflix.pdfIn PDF document text
    • http://gopidap.scienceontheweb.net/stock_market_lessons_for_beginners.pdfIn PDF document text
    • http://myluckybet.xyz/vivapuwalik727zk.pdfIn PDF document text
    • http://avit0.cc/pumin9a3jv.pdfIn PDF document text
    • http://fragcups.com/10-2_word_problem_practice_measuring_angles_and_arcs_answer_key3xouf.pdfIn PDF document text
    • http://wersita.space/73484200284s6r0d.pdfIn PDF document text
    • http://fazejajogavu.medianewsonline.com/best_pll_algorithms.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366957/normal_5fdaf93fd15ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460709/normal_6009b538c6f9c.pdfIn PDF document text
    • http://towufato.mywebcommunity.org/laws_of_prosperity.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484820/normal_5fe2bee106c93.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390055/normal_5fe28475013e7.pdfIn PDF document text
    • http://bigops.fun/7759295645514g30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464852/normal_601732691b075.pdfIn PDF document text
    • http://trikotoria.ru/excel_transpose_entire_worksheetrtem1.pdfIn PDF document text
    • http://tesupelaj.sportsontheweb.net/beneath_a_steel_sky_walkthrough.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428054/normal_6007ec5d5917f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416664/normal_60510d313856b.pdfIn PDF document text
    • http://hackins.site/151769856223v9lj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b033bc64-77f2-4f06-b9b9-b5963930c99f/honda_gc_160.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/207cb740-3b10-479c-8ab9-0cce7f6e1ba9/81495310159.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000182a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x182A8 4640 bytes
SHA-256: 6ca38026eb9a3f7a85161913442861adf1849c2b320345b082fac65b73d7ce5e
font_01_sfnt_off00019251.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19251 13392 bytes
SHA-256: cd5e8af24c6c2ec35f80fc682fade44822d8299bb38fa1aacb681c4a672e4d44

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