Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc55f8d84afabedb…

MALICIOUS

PDF

81.6 KB Created: 2021-04-24 17:14:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c3c1d5f0e62fa2779fee4a2a8da5c2e9 SHA-1: 15e1b3087e997c813b79d1aa6c9b918b62f80518 SHA-256: bc55f8d84afabedbe9f8227b360b470ee1538aa7c193edf09b97e9e5ed943fc6
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, likely intended to deliver a secondary payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to 'powerline adapter' setup, which is a common tactic for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://jumiwimov.ru/strik?utm_term=how+to+set+up+powerline+adapter
    • https://cdn.sqhk.co/bamosabubesi/cjbzgji/39938415364.pdf
    • https://cdn-cms.f-static.net/uploads/4368750/normal_5fd8f9fe807e1.pdf
    • https://static.s123-cdn-static.com/uploads/4413867/normal_5ff587913caaa.pdf
    • https://cdn.sqhk.co/duwewofowus/R5hD7bS/lirizerokijebamibu.pdf
    • https://cdn-cms.f-static.net/uploads/4391636/normal_601f76d16ed51.pdf
    • http://rexuwoxaga.sportsontheweb.net/kingdom_manga_release_date.pdf
    • https://cdn.sqhk.co/sezunofubuzi/ggjihgN/maruti_swift_shocker_price.pdf
    • http://wubowobipevoto.mywebcommunity.org/65255604445.pdf
    • https://static.s123-cdn-static.com/uploads/4416919/normal_60054cf020712.pdf
    • http://xanejog.medianewsonline.com/arbitration_and_conciliation_act_1996_amendment_2020.pdf
    • https://static.s123-cdn-static.com/uploads/4369506/normal_5ffdbd95769be.pdf
    • https://cdn.sqhk.co/sorubajuzoxe/u5Jgdje/765463667.pdf
    • http://folugomobok.getenjoyment.net/all_cars_logo_with_name.pdf
    • https://static.s123-cdn-static.com/uploads/4479451/normal_60085ab0284b2.pdf
    • https://cdn.sqhk.co/pawekenu/XjgjeyN/pico_question_apa_format.pdf
    • https://cdn.sqhk.co/vazoguzo/Jgdggif/xuvajos.pdf
    • https://cdn.sqhk.co/zimalodepafo/higOiem/emotional_freedom_technique_website.pdf
    • https://cdn.sqhk.co/golemejexeno/WjhGo91/most_wanted_real_impossible_track_stunt_car_racing.pdf
    • https://static.s123-cdn-static.com/uploads/4376625/normal_5ffe4f949bc77.pdf
    • http://vamefegali.mywebcommunity.org/95276990136.pdf
    • http://duwinijuj.mypressonline.com/78908982467.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jatugeset.atwebpages.com/banepukobufix.pdf
    • http://zesafemumibow.myartsonline.com/old_man_and_the_sea_sparknotes.pdf
    • http://doxokalisawe.myartsonline.com/ebook_download_free.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_off00010123.bin
c7cf04aee229f961301a81c1b513ff82c1a0220b6a67c9c73d11afeba781de80
pdf-font-stream PDF embedded font (sfnt) at offset 0x10123 5004 bytes
font_01_sfnt_off0001123e.bin
dd02d260e42812bae3b112b66bd2cdb25d68948f792cc920422660a84a1e8011
pdf-font-stream PDF embedded font (sfnt) at offset 0x1123E 11328 bytes