Malicious PDF — malware analysis report

Static analysis result for SHA-256 450266998a717f83…

MALICIOUS

PDF

77.1 KB Created: 2021-04-23 16:45:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ffdcfe58f8673b557b19ab14d993f98 SHA-1: 71a51800d2996109fa833e6db1959b87260d9e72 SHA-256: 450266998a717f83c2b5bf02af6998e65ba96da271a50beebbc403ed21d40a09
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, specifically identified as a phishing trojan. It contains an embedded URL that is likely part of the phishing lure, directing users to a site related to a "Polaris 280 rebuild kit". No scripts were extracted, but the presence of external URIs and the overall detection suggest a phishing attempt to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/strik?utm_term=polaris+280+rebuild+kit
    • https://cdn.sqhk.co/vulovosovem/hfi3qEu/effective_interpersonal_communication_skills_in_nursing.pdf
    • https://cdn-cms.f-static.net/uploads/4450896/normal_604475935e3c8.pdf
    • https://cdn-cms.f-static.net/uploads/4480744/normal_5fd8768e4e7ea.pdf
    • https://cdn.sqhk.co/nasanoroge/cP1gdSm/8406004956.pdf
    • https://cdn.sqhk.co/vaxarogajib/jageSkU/driving_school_for_adults_with_anxiety.pdf
    • http://nurinubofed.iblogger.org/amortisation_of_company_formation_costs_ato.pdf
    • https://cdn.sqhk.co/waxobakal/Rghgjh2/newsies_ben_cook.pdf
    • https://cdn.sqhk.co/lupekute/gid54sj/all_my_movies_free_download.pdf
    • https://cdn-cms.f-static.net/uploads/4415534/normal_6068754633b8c.pdf
    • http://mufikisa.22web.org/nifikaraxirikimonuvem.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://f770b3d7-c897-40e0-9323-5ad0abd91552.filesusr.com/ugd/1fa6dd_ca2d80733cd349f592425428a8d57c3c.pdf?index=true
    • http://xaganifexoba.epizy.com/10113879464.pdf
    • https://s3.amazonaws.com/kelukakeb/41924842077.pdf
    • http://xewowetakefov.rf.gd/23594355554.pdf
    • http://wejofofufaxut.epizy.com/introduction_to_public_policy_making.pdf
    • https://s3.amazonaws.com/buwosevax/how_to_make_a_sonic_reeses_blast.pdf
    • http://lededisizu.epizy.com/blood_bowl_2_release_date.pdf
    • http://vorawaforase.epizy.com/available_for_netflix_shows.pdf
    • https://s3.amazonaws.com/fifomi/frigidaire_washer_dryer_combo_owners_manual.pdf
    • https://f19d2187-ce67-4d04-8798-eef694565169.filesusr.com/ugd/bd4746_6ce544fd0f4d42d5b6bdb4cdd4ba97e6.pdf?index=true
    • https://s3.amazonaws.com/lopeteb/nuwube.pdf
    • https://s3.amazonaws.com/bulolimepol/movies_counter_punjabi.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_off0000edd0.bin
b17f7cca30aa6c80067b0d3a6cba9566b953f3f5138b82e5e2bd8bbe06d4406e
pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD0 5492 bytes
font_01_sfnt_off0001007f.bin
09cb434b734ed5b83239651e4158e7e01e880fefe8427e36707906daa9a6f7f6
pdf-font-stream PDF embedded font (sfnt) at offset 0x1007F 11352 bytes