Malicious PDF — malware analysis report

Static analysis result for SHA-256 4465901d0a4c5563…

MALICIOUS

PDF

71.2 KB Created: 2020-11-24 13:46:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: ff1227331a1d769bed6f1974dd83f1a1 SHA-1: 95aa2f65af47d066805809dd03119b068e3d470e SHA-256: 4465901d0a4c5563f99cd8d18e25fc0d81141135c84a020ca8a9dedc2408ca64
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The document contains an embedded URI pointing to 'trafftec.ru', which is likely a phishing or malware distribution site. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest it's designed to trick users into visiting a malicious site, potentially for phishing or to download further payloads.

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://trafftec.ru/aws?utm_term=weekly+schedule+template+printable+2019 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4405687/normal_5fad2f2e2e8b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367294/normal_5f888dea06ab8.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/05915ee1-4081-40e8-a3ba-abc1cdfe2362/motion_for_reconsideration_massachusetts.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/free_partnership_dissolution_agreement_template_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a2d91cb-d372-48fb-8308-cd3a4683af5a/bujivodem.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/return_man_hacked_arcadeprehacks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17e34ce0-7a63-4911-9a06-4835f28c5d4b/reading_comprehension_exercises_for_beginners_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/zuxekosozekejuronox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87dc6d50-5ce2-4ce9-bc4f-4680060537da/zepunetixufikejasizat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4cf7553-1fb6-4505-9ebb-a9864bec8718/kikarigimibukuxudojufe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/897cfe04-92ab-410e-ae72-cc548cf918f8/the_black_mage_first_year_read_online.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/schultte_basteln_vorlage.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82107a1b-fa56-4cef-869e-73da6ae18ccd/ganuselezifi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65ae6282-a0ad-4999-814d-93d4ca2eab13/g_minor_bach_sheet_music_piano.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_off0000d7f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7F4 6116 bytes
SHA-256: 8add29e8bb4cdd90974bdb263ac017d84ef242e022874aa43674e9c1f780e502
font_01_sfnt_off0000eca2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA2 10308 bytes
SHA-256: e4671b0dda74b97e0a93761d265a0dd1e875a6e89fe5cd356a5f7cd52af53487

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