Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0ff4a9736cb5ae2…

MALICIOUS

PDF

68.8 KB Created: 2020-12-23 18:40:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: ceda5688585daefaf94c48343cfaeb0d SHA-1: d148c50be7e85a24b5107f832bdc752b5bb2f679 SHA-256: e0ff4a9736cb5ae2345bc54d99d686925a432bbf477867d47dcb9fcc0c30d346
96 Risk Score

Malware Insights

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

The file is a PDF with a high ML classification score and ClamAV detection, indicating malicious intent. It contains an embedded URI pointing to 'traffnew.ru', which is likely a phishing or malware distribution site. The document body is heavily obfuscated, but the presence of the external URI is a strong indicator of malicious activity.

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://traffnew.ru/strik?utm_term=wheels+on+meals+cast PDF link annotation
    • https://cdn.sqhk.co/naritiba/hnhbicH/totally_battle_simulator_game.pdfIn PDF document text
    • https://cdn.sqhk.co/wotezowedo/0bjhjje/enrollment_form_template_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8aa24dd-426a-4d13-a489-106f5a7976a1/pemag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ae29746-4507-46d8-ab77-0e92561475a2/88670327963.pdfIn PDF document text
    • https://s3.amazonaws.com/wejalixex/oracion_de_la_manana_cri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61886ef9-75ee-41b4-93b9-3d63e381131b/30856596312.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50183be9-f5d2-4a52-9bbf-65b32474d241/nadokidobavejafobimemo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/772118ba-0133-44b6-b002-ee4c225ce642/temanibapagujikut.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/the_cell_cycle_worksheet_matching_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1baad1e9-132a-4441-b747-397b53fe7cbe/columbia_nightlife_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/guided_reading_answers_activity_16-1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70c3e7ab-d3a5-4668-bc2b-0797859156e1/49186676775.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/045ac734-25df-4106-8bbc-8dd682518309/17636811532.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5ba4677-db68-414a-8d09-3e5a18c06821/bugomulisatofuviradate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0b0e126-13a4-412f-9f03-ecb58c584186/94031294307.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77a52486-5989-492a-acc6-db6e47926b0e/novodel.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_off0000d287.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD287 4956 bytes
SHA-256: a1b81d8c2866c6d24385bc48330bf623cb26755766bca19d06c35da9bed51dd6
font_01_sfnt_off0000e348.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE348 10268 bytes
SHA-256: f215e2d879e425cb2b1e4121ac74b084abd70af4d172b55fd055ff82f4a81e01

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