Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d5aea1256e22d9f…

MALICIOUS

PDF

67.6 KB Created: 2020-11-29 17:21:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 8aad4d8472615480565bb1b1b97aba0d SHA-1: da3ea5984cb41663d8678297d90f71ae1642da78 SHA-256: 3d5aea1256e22d9f87d32f28cc803793103e275574a8b3bff7faf31df6578129
136 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with heuristics indicating it's a password-protected archive lure. The embedded URL, https://traffnew.ru/123?utm_term=disney+princess+enchanted+journey+download, suggests a phishing or malware distribution attempt disguised as a game download. While no scripts were directly extracted, the PDF structure and heuristics strongly suggest an attempt to trick the user into downloading and opening a subsequent malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/123?utm_term=disney+princess+enchanted+journey+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4459166/normal_5fad87b2368ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426418/normal_5fb9cc23d164e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385612/normal_5fa049e10f25b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369304/normal_5f8dfb50c88d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379473/normal_5fa9e95c34b80.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/b817b29b-bdd4-4bab-9626-bb1ae6154ee0/lepudoxugexatomo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c69aa58-3357-4c42-90a4-c0a9fb8dd29c/ukulele_huntington_beach.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0ef8819-c416-4418-8499-7b05d4bc659a/41514120961.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8571fdf6-1ef3-4002-9c86-68289be25335/unblocked_games_crush_the_castle_4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fea1e99e-a6e3-4bf3-bdf6-abb65e447a62/morrowind_coc_commands.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1dc6e93-8e79-4564-940a-189a1033753a/javascript_the_good_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/52700202169.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_off0000c8a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8A6 5428 bytes
SHA-256: ddb00a7dd411d5841241b1d2f4f08d90b0c68d04d1fbb62824094c8d27edfe62
font_01_sfnt_off0000db33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB33 11252 bytes
SHA-256: 0e66d8746793b2380f0be43d8564a1be42d3062e91125067ca515926fabb7f66

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