Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a85aa83f604d3e5…

MALICIOUS

PDF

90.3 KB Created: 2021-03-19 19:04:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a0b2c4b8d2c1f98c339596fd22e0d17 SHA-1: 16600b72f539073600a1c4708041b6f8d4664a93 SHA-256: 8a85aa83f604d3e5b7be6896fba1d51d28c72832ea3f283453ae6e6b35ec4c6f
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, specifically identified as a phishing trojan. It contains an embedded URL pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to search results.

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://botokaw.ru/wix?keyword=wine+regions+in+brazil
    • https://cdn.sqhk.co/nepodowu/Iozjjng/andyroid_android_emulator_free.pdf
    • http://alphabitx.com/11904271770on8nm.pdf
    • https://cdn.sqhk.co/nivunufozub/ixZhgAe/zotefurutelifuximo.pdf
    • http://italia-doc.fun/blank_fraction_barsue151.pdf
    • http://vizionsmc.net/how_to_create_income_statement_from_balance_sheet5tyvq.pdf
    • http://upsbox.ru/joseph_prince_holy_communion_bookssnbq.pdf
    • https://cdn.sqhk.co/wefegiwezon/fkjdxhe/world_mma_fighting_champions_mod_apk.pdf
    • https://cdn.sqhk.co/figoveraboj/hisfcih/800_words_season_4_how_many_episodes.pdf
    • http://vykupavto54.ru/93003157397xbznc.pdf
    • https://cdn.sqhk.co/gogerazina/5gWxNha/zetogizimufezoruxutu.pdf
    • http://insurancecarusa.com/1119638569b9fkg.pdf
    • https://cdn.sqhk.co/wuzomowa/ghjjghg/27046142637.pdf
    • http://liketime.fun/2202655727phpp9.pdf
    • http://daddytestit.xyz/rawamivogesusodokesitan3dlgj.pdf
    • https://cdn.sqhk.co/sofetarunox/jhYiibz/digimon_xros_wars_great_x.pdf
    • http://istlan.fun/ponuxaratawewemusirec9s7c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/168bb5ce-e73d-4081-9f07-4b049ed59133/53052020016.pdf
    • https://uploads.strikinglycdn.com/files/9e16c3db-017a-4148-af2b-68395ff19366/ley_de_propiedad_horizontal_venezuela_2018.pdf
    • https://uploads.strikinglycdn.com/files/b8300d22-730d-487a-b0be-593fb33796d1/fokenizo.pdf
    • https://uploads.strikinglycdn.com/files/ceb62732-5e1d-4b6c-b579-98138b3a58e5/does_swiffer_wetjet_solution_disinfect.pdf
    • https://uploads.strikinglycdn.com/files/d304acb4-9a7a-47a0-a0f2-fc9e5db43635/what_is_salesforce_in_simple_terms.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_off00011e1d.bin
15e273fb904f417bf41e13e14c1a9393b66f319aae66d656abb49418695db48c
pdf-font-stream PDF embedded font (sfnt) at offset 0x11E1D 5056 bytes
font_01_sfnt_off00012f78.bin
b22675acb0fec6884ba9a87ae15be5a986f3ba84e2de955a5e62736f9dec6d00
pdf-font-stream PDF embedded font (sfnt) at offset 0x12F78 13640 bytes