Malicious PDF — malware analysis report

Static analysis result for SHA-256 f75247f4c3aa642c…

MALICIOUS

PDF

72.7 KB Created: 2021-01-03 03:02:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 21b246275ec386ac495350979d466c24 SHA-1: 98d3cd7ecc234d6c03ccd65340fa60001dff52e4 SHA-256: f75247f4c3aa642cafb22f276ee99d47a350578d62ea502d11e36c88f68edda9
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by multiple heuristics, including a critical alert for a PDF redirector link pointing to 'gettraff.ru'. The ML classifier also flagged it with high confidence. Although no scripts were explicitly extracted, the PDF structure and the presence of a malicious redirector strongly suggest an attempt to deliver a malicious payload or phish credentials.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/aws?utm_term=introduction+to+statistical+quality+control+montgomery+pdf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4392868/normal_5fcd019b85c61.pdfIn PDF document text
    • https://cdn.sqhk.co/wanukawuwota/YigjldW/first_hit_song_with_electric_guitar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447630/normal_5fe9aa849b696.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468261/normal_5fe0db43a72ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369920/normal_5f8d5f7f9007e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482623/normal_5fbc9fa512222.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377098/normal_5f9c0ab8b79d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373297/normal_5f8a16e2cce09.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4506159/normal_5fed2e398df42.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420020/normal_5f9740b34f754.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/zikeko/commercial_invoice_for_export_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7d18c94-0228-468f-9cb0-6592dee170bf/personnages_dont_starve.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/89497239173.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

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d02f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD02F 5520 bytes
SHA-256: 77ae4817ca838799753dd66e3d9c359b540ee9f3d5b568ba785c82bc296b7c37
font_01_sfnt_off0000e2dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2DC 10700 bytes
SHA-256: 986d7f4594039acdc2845eafa1e83ba402a90f81b74aa47a4812c0cb465477a6
font_02_sfnt_off00010749.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10749 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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