Malicious PDF — malware analysis report

Static analysis result for SHA-256 884846d310b282d7…

MALICIOUS

PDF

71.9 KB Created: 2021-03-29 20:08:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2a9c5ccb00e22c4833055c34279c7268 SHA-1: 53c81a94c3582e1dddca5116feebd7a159d50ee4 SHA-256: 884846d310b282d7ffdc7aed127eb8eb30043c4ad8297abfb33e3fad57cdf214
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://pelibifir.ru/wix?keyword=topshop+size+guide+dresses PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4419836/normal_602ba25f4a7bb.pdfIn PDF document text
    • http://tokio-2020.fun/wosomop93f81.pdfIn PDF document text
    • http://ig-copyrightviolation.com/speed_queen_dryer_gas_connectionpcnfp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370304/normal_6043880b0d98e.pdfIn PDF document text
    • http://gafujovinotu.22web.org/vegas_club_performers_october_2019.pdfIn PDF document text
    • http://sk-anker.ru/80575251978bldct.pdfIn PDF document text
    • http://kirakexig.mypressonline.com/kasemimedisumosonugi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/foneniz/86505772663.pdfIn PDF document text
    • https://s3.amazonaws.com/bisapovepizaj/95272896451.pdfIn PDF document text
    • http://kenesowozowojaw.myartsonline.com/4336921724.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/chunghop_universal_remote_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/gonasidupij/85279817593.pdfIn PDF document text
    • http://kabumosubeno.epizy.com/35106110248.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/how_much_does_excel_certification_cost.pdfIn PDF document text
    • http://sinusudixuxuwad.atwebpages.com/aha_acls_algorithm_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/1984_review_questions_part_3.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD04 4976 bytes
SHA-256: 35f9e06bc7a13f0035bc1894957de573d722765c14194f33b21fddf9c1f0abd5
font_01_sfnt_off0000edf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF4 10816 bytes
SHA-256: cb5278284a9b06ff4dd36d05e633c65457693a4f7211300aa73ab009432bdd99