Malicious PDF — malware analysis report

Static analysis result for SHA-256 b85b54086f8e3b61…

MALICIOUS

PDF

78.4 KB Created: 2021-03-10 18:11:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1a50e49e97a14f8896e797043ed30ef SHA-1: 78eda9e46ef0355b8bd8b2f7bd2c4976c5b6915e SHA-256: b85b54086f8e3b6194eff7090395b5382b81ea8765210fbbd0e46210a4d9e316
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 phishing or trojan threat. It contains an embedded URI pointing to a URL that is disguised as a service manual, likely intended to trick the user into downloading a secondary payload. No scripts were extracted, but the presence of external URIs suggests a download or redirection mechanism.

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://leonvi.ru/wix?keyword=2017+honda+fury+service+manual
    • https://cdn.sqhk.co/dejuxafe/chd4hdT/northone_business_banking_customer_service_number.pdf
    • https://static.s123-cdn-static.com/uploads/4465127/normal_6007008b8a403.pdf
    • http://wigomufeze.22web.org/mbed_nxp_lpc1768_datasheet.pdf
    • https://cdn.sqhk.co/tajiwikiter/bgijeif/dulitupeliluj.pdf
    • https://cdn-cms.f-static.net/uploads/4466140/normal_600b95efede07.pdf
    • https://cdn.sqhk.co/gabamulijawe/ih3ibse/36584079153.pdf
    • https://cdn-cms.f-static.net/uploads/4475737/normal_5fdbafbb5199a.pdf
    • http://xepidenad.scienceontheweb.net/what_are_examples_of_capital_budgeting.pdf
    • http://qrastenmap.online/the_royalty_family_calling_fake_video_call238dh.pdf
    • http://vvinorama.website/lebara_phone_number_spainhfbi3.pdf
    • http://vulufinagi.mypressonline.com/tunobafof.pdf
    • http://ibkreactiva2020.com/sadizeser0ybx.pdf
    • http://surupumigo.mypressonline.com/xbox_a_button_stuck.pdf
    • http://extrameets.fun/c_book_for_beginnershybgw.pdf
    • https://cdn.sqhk.co/sasibasodiwu/dVjbqgc/webepoju.pdf
    • http://biomaniks.website/salario_minimo_en_puerto_ricoeruuy.pdf
    • https://cdn.sqhk.co/rekubapapup/Pjbiggc/gang_blast_app.pdf
    • http://neip-forum.fun/reading_comprehension_lesson_plans_2nd_gradexw7mr.pdf
    • http://terugate.mypressonline.com/you_tube_tell_me_about_yourself_interview.pdf
    • https://static.s123-cdn-static.com/uploads/4377679/normal_5febb748bf039.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vapufebifuv.epizy.com/centralised_organisational_structure.pdf
    • http://livirava.atwebpages.com/95862023073.pdf
    • http://fapujeg.epizy.com/14019948906.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_off0000f331.bin
7ed4bd980321e6aaf872aaaf5f7df205a1c6c0574a1f980019258b6a297dd69b
pdf-font-stream PDF embedded font (sfnt) at offset 0xF331 5736 bytes
font_01_sfnt_off000106a3.bin
8f07a171217c8e5e77f40c6bc0b59bd8f1b1cd9448b2f53fe260c503ab745b37
pdf-font-stream PDF embedded font (sfnt) at offset 0x106A3 11028 bytes