Malicious PDF — malware analysis report

Static analysis result for SHA-256 3edad93d61a472db…

MALICIOUS

PDF

74.5 KB Created: 2021-01-25 14:52:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 203e609494aa28764654067656b76824 SHA-1: b4189d046e045c68f6809e9fb271f03d710c24ec SHA-256: 3edad93d61a472db45e4a84b2ebc60e5290c3497ccb6ed73f0aede03862171a2
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or social engineering campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to marsupial facts, directing the user to the identified URL.

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://trafffe.ru/wb?keyword=interesting%20facts%20about%20marsupials PDF link annotation
    • https://cdn.sqhk.co/kuzetuzame/Keghjh7/jodebapizodexosabiw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365620/normal_600794babcf13.pdfIn PDF document text
    • http://zivudib.66ghz.com/constitutional_convention_crossword_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/pemazekefise/jahgiaA/glass_jump_don_spill_level_3.pdfIn PDF document text
    • https://cdn.sqhk.co/vibisidumes/Lfhfdic/bixutigurasoxafatu.pdfIn PDF document text
    • https://cdn.sqhk.co/zoxogatuv/Qvvgejc/1305451052.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kajomeki.epizy.com/29132593808.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/alleluia_alleluia_give_thanks.pdfIn PDF document text
    • https://s3.amazonaws.com/gisujubolidine/5483631461.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/86632496613.pdfIn PDF document text
    • http://befojarariwowab.epizy.com/51550302935.pdfIn PDF document text
    • http://velawomonoxejuz.epizy.com/higher_order_derivatives_worksheet_with_solutions.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/coniugazione_verbo_scrivere_forma_passiva.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/lower_chest_cable_fly_form.pdfIn PDF document text
    • http://veluvuwipigunuw.rf.gd/wereratawanipogo.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/adobe_captivate_cc_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/paxunu/pojuvunowiseb.pdfIn PDF document text
    • http://mudasaki.epizy.com/supugagotiresaxem.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_off0000e624.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE624 5412 bytes
SHA-256: 57a24d8943a59c40ce2a4a0f54698df272bdcc3d3dac1597d236b3e30cec6352
font_01_sfnt_off0000f87a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF87A 10612 bytes
SHA-256: 0206d0bd8331b4ae37e33ffb483c59daafdb80f699aea1feadec5e8e7630851b

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