Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c067feb6d58b200…

MALICIOUS

PDF

73.5 KB Created: 2021-02-22 01:40:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 40977a396665a7b7b4ecd561068cb13c SHA-1: b7a8afb98e16637b4cbe7d00fa7a25cdc796443b SHA-256: 3c067feb6d58b2000381a50499e70b4c4ede76a5e8b75cdcc7302a28bde46fa4
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to 'color mixing', which is likely a pretext to disguise the malicious nature of the link.

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://jacksth.ru/strik?utm_term=how+to+make+black+color+mixing PDF link annotation
    • https://gepavemu.weebly.com/uploads/1/3/4/8/134861499/4159808.pdfIn PDF document text
    • http://wotasabe.22web.org/savosome.pdfIn PDF document text
    • http://instahelpforbusiness.com/358715700357azw.pdfIn PDF document text
    • http://mojikinewosak.22web.org/2008_ford_f250_maintenance_schedule.pdfIn PDF document text
    • http://raifaisentgo.online/edexcel_a_level_maths_pure_year_2_solutionsbjrw0.pdfIn PDF document text
    • http://waguzeb.66ghz.com/38548338450.pdfIn PDF document text
    • http://bejagofeteveba.22web.org/kikavedumemazow.pdfIn PDF document text
    • http://torchland.xyz/935011182397u86f.pdfIn PDF document text
    • http://odebayitrafikhizmeti.com/balance_due_vs_amount_due_bank_of_americavr1ar.pdfIn PDF document text
    • http://tryse.xyz/sabixizalisl0zym.pdfIn PDF document text
    • https://pipedexow.weebly.com/uploads/1/3/4/8/134852679/xikupitoz.pdfIn PDF document text
    • http://discovljzg.fun/vuruwizaduninexesitykfbb.pdfIn PDF document text
    • https://dezusopivelisuk.weebly.com/uploads/1/3/4/7/134734284/9167097.pdfIn PDF document text
    • https://resodarapasak.weebly.com/uploads/1/3/4/6/134659305/zaged.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/jowutoneranemuk/kigirekejivufitijudijogu.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/hiring_request_form_template.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/foroxolotikidef.pdfIn PDF document text
    • http://gogositanisewu.rf.gd/pibozumuzinabi.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/87101120216.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_off0000e373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE373 5268 bytes
SHA-256: a14c165c756cc16370304b5f1e4d1e2edc63a240458cee24420ae60fb0fa9fb8
font_01_sfnt_off0000f55a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF55A 10364 bytes
SHA-256: 715d1666f05b50b129f56637995de8019cded2ef4f77b1bea3a4d99638d9993b

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