Malicious PDF — malware analysis report

Static analysis result for SHA-256 2da5ded94d398b38…

MALICIOUS

PDF

136.7 KB Created: 2021-04-01 17:33:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 3699a4f32ac7e6c685326a4058e80415 SHA-1: e9587c015be52fd33f5768f286401067fd9be214 SHA-256: 2da5ded94d398b382b6c83654a0fd189e3f34a19550a6cd9c4ebfb1464a8a402
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to exploit users through a deceptive link, likely related to a phishing campaign.

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://ponafet.ru/strik?utm_term=manual+radio+vhf+kenwood+tm+261 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485942/normal_605d7fd8c7828.pdfIn PDF document text
    • http://gixipures.sportsontheweb.net/12_steps_and_12_traditions_step_3.pdfIn PDF document text
    • http://devedilazabu.medianewsonline.com/30607457040.pdfIn PDF document text
    • http://jelusuvobirolen.mywebcommunity.org/62737847229.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416664/normal_5fc76208df01a.pdfIn PDF document text
    • http://jusukigib.sportsontheweb.net/autonomic_nervous_system_pharmacology_mnemonics.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408589/normal_60191ec30546f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421627/normal_5fc69ce49f307.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sabixukavizom.myartsonline.com/75443084683.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/fevasirinapopepu.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/pagalworld_bhajan_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/comcast_x1_box_hard_reset.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/clara_mae_rooftop.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/4555547357.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/89309652894.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/how_much_is_a_stamp_for_a_regular_letter.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/caguan_mini_portable_magnetic_gps_tracker.pdfIn PDF document text
    • https://s3.amazonaws.com/sutawowirosuvuv/82930281629.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/bojesovufidozibaku.pdfIn PDF document text
    • https://s3.amazonaws.com/paxuvagal/how_to_use_karcher_k4_detergent.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/nccn_guidelines_clear_cell_carcinoma.pdfIn PDF document text
    • https://s3.amazonaws.com/gavobawum/cyberpunk_2077_review_pcmag.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/artificial_insemination_in_goats.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_off0001d350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D350 5528 bytes
SHA-256: e2ef6ee54425a001570e019de9ae30b9ccbb9637420d74ded5c94915c9fb2131
font_01_sfnt_off0001e623.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E623 14168 bytes
SHA-256: ba2495ceeda47925068e9a764b85333924833991eb6f0b4bfb3e2aaf7c098088

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