Malicious PDF — malware analysis report

Static analysis result for SHA-256 6118e601e00b8eda…

MALICIOUS

PDF

69.6 KB Created: 2020-12-23 10:07:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 2022a9d9a7931fe8a9289a418308a67c SHA-1: d3b7eb1766aea1d166c6d2f2fe43a05724ec5abe SHA-256: 6118e601e00b8eda85d8ff2834d78b8df349b0c2986583a164cf7167199c3634
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a site masquerading as a game initialization page, likely a social engineering tactic to trick users into further interaction. No scripts were extracted, but the presence of the malicious URL and the ML/AV detections strongly indicate a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffset.ru/aws?utm_term=battle.+net+game++initializing PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370088/normal_5fa336e73f598.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394079/normal_5fa797b2e4436.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383304/normal_5fc99bc1ef290.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413566/normal_5f9fb6fa73cc0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365635/normal_5fa3b80940f53.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/bezorito/hayabusa_gi_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/free_digital_marketing.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc559d7df132613bbdb3256/t/5fc9a0fb856278751755eb6e/1607049468390/tamil_nursery_rhymes_video_songs_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee484920-a107-48db-88a2-cafe6b567b0d/bimakuragi.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/ncert_class_9_maths_solutions_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c979d565-324d-4a7f-9b49-bbb11583a48f/80446860925.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/14119124062.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c93e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC93E 4540 bytes
SHA-256: cfd8fbc5e523bc9331ebbad7b97fba055d3bd1cf822d7a37b29b3c99c27d0a77
font_01_sfnt_off0000d897.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD897 10280 bytes
SHA-256: 347a1f78797e60860fe0df2ac0ebac00dc840983336206338a397488b08a32c0
font_02_sfnt_off0000fbd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBD1 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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