Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc98f4348be2fad0…

MALICIOUS

PDF

74.3 KB Created: 2020-12-18 01:05:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: fdf984ca0a4d2545bfb643675720b3e6 SHA-1: f5a32fa80788ec64a8e58113e93b178ada2b5770 SHA-256: dc98f4348be2fad0537df39b927b131cbe6fe63f946f7a5542c5404bf5cf8bc6
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, traffset.ru, which is flagged by heuristics. ClamAV also detected this file as Pdf.Phishing.Trojan. The ML classifier strongly indicates maliciousness. While no scripts were explicitly extracted, the presence of an external URI in a PDF is a common technique for phishing or delivering second-stage 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://traffset.ru/123?utm_term=a+love+to+last+april+30+zodiac PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450336/normal_5fdbdc60763fc.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://static1.squarespace.com/static/5fc5d9e660f2895dc109c93a/t/5fc68d05645712565420170b/1606847750607/86859861435.pdfIn PDF document text
    • https://s3.amazonaws.com/vavebufevodutob/gimifugumaxanexatuj.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe3ba8cb3e0f57711a5fc4/1606302643970/26816046686.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6b042b8467722f1fc230f/t/5fcbebdd6e74d26c6f0d2c4b/1607199709644/download_alien_zone_raid_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/vebenok/sabixese.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0bc0f405d5340f328bb30/t/5fc0d5c53c02f22b9d2cc872/1606473163018/literary_elements_the_odyssey_worksheet_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5abc8084698658e7ee89a/t/5fd5f9150f11661d4c20f507/1607858453723/conceptual_physics_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/sabob.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6a792f7cf8c754052ca82/t/5fc7eed0287ebd5a5099dcc7/1606938322484/flixster_video_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d135bf71053ccb0fc630/t/5fc0dcfd18e72e5fdbf78226/1606475006323/29809638123.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0df209955c744b53b696b/t/5fc5194ce18c5c478e9d407c/1606752588501/whirlpool_accubake_f2_error_code.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7a4fa8c9e503d27aafc69/t/5fd0186748ae4d1218f48c0f/1607473255902/wii_u_emulator_download_apkpure.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_off0000d849.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD849 5156 bytes
SHA-256: 3305444765b21ef4edc8d691b380ceeb083d7fa927e9d565f8070d4e40cdd867
font_01_sfnt_off0000e9ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9ED 10684 bytes
SHA-256: 590ddf6fb04f15120ed1b44ebfe3ca8055777e9d1f353cc829966deb89808531
font_02_sfnt_off00010e61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E61 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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