Malicious PDF — malware analysis report

Static analysis result for SHA-256 d64ae52821528a5c…

MALICIOUS

PDF

76.6 KB Created: 2021-03-21 10:21:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 782eb00fd24f15ca4b3910b84d197b27 SHA-1: 6b173e1e756a38eb96958eb43199f26a9fc4fb06 SHA-256: d64ae52821528a5c5fd5ff5773eb213e064902719cfdfd799a29e6677c8d0f82
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URI pointing to a website that claims to offer a 'speed queen top load washer repair manual'. This is a common lure to trick users into clicking the link, which likely leads to a malicious download or exploit. The ML classifier and ClamAV detection strongly indicate malicious intent, and the presence of embedded URLs suggests the document is designed to redirect users to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/wix?keyword=speed+queen+top+load+washer+repair+manual
    • https://cdn-cms.f-static.net/uploads/4385636/normal_5fd0f457755b8.pdf
    • https://static.s123-cdn-static.com/uploads/4374983/normal_60084812ae3af.pdf
    • http://fizebiredasibi.mypressonline.com/what_happened_to_mary_rowlandson.pdf
    • http://ketrovk.xyz/lawojunevwif2l.pdf
    • https://cdn.sqhk.co/tokotuxajif/hhgfzgc/63386721625.pdf
    • https://static.s123-cdn-static.com/uploads/4411245/normal_5fe33195b6ba2.pdf
    • https://sijalafad.weebly.com/uploads/1/3/4/8/134887162/5484961.pdf
    • https://tunibedexorole.weebly.com/uploads/1/3/5/3/135350281/nafeto.pdf
    • https://cdn-cms.f-static.net/uploads/4417213/normal_5fd1e16075e85.pdf
    • https://cdn.sqhk.co/gujowaxexag/ibGNid6/escape_game_prison_adventure_2_block_puzzle.pdf
    • https://cdn.sqhk.co/vipujitebiki/feihgxv/govodel.pdf
    • http://kefipipina.22web.org/cnn_world_sport_reporters.pdf
    • http://dress-russia.ru/how_to_write_a_good_personal_response_essayr1xkg.pdf
    • https://cdn-cms.f-static.net/uploads/4469850/normal_604cd756984ed.pdf
    • http://bejisosubonito.sportsontheweb.net/armitron_wr165_turn_off_hourly_chime.pdf
    • https://cdn.sqhk.co/durotula/MigPjgW/besosevan.pdf
    • http://nulivanofika.mygamesonline.org/40285941592.pdf
    • https://litemavokof.weebly.com/uploads/1/3/1/8/131871991/b90f663c3cf1e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xekujigifur.epizy.com/lelibemiwevosuxapigudij.pdf
    • http://residarifuwus.rf.gd/66616293961.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_off0000edf1.bin
60a2602e3d48948e1b7a89f2c6ad4ff62068bd9a760b24d29e23e3b04b1124e7
pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF1 5520 bytes
font_01_sfnt_off00010096.bin
b808421bd90f968d2f088e9102943546e14613043bdfbb15a390397bbb850c9a
pdf-font-stream PDF embedded font (sfnt) at offset 0x10096 10492 bytes