Malicious PDF — malware analysis report

Static analysis result for SHA-256 960a291f41dd06a9…

MALICIOUS

PDF

62.5 KB Created: 2020-12-20 06:50:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: f32e3e8a508baddbfa7e9ac87c10606e SHA-1: ba8ddcb270fc745628eb5eea74ec7d935d459538 SHA-256: 960a291f41dd06a94d6eeb568353f80ed0e4b239ab8d4a2c94bd87e5686e7a54
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/123?utm_term=brian+massie+concord+ohio'. This indicates the document's primary purpose is to lure the user to a potentially harmful external site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL is sufficient to infer a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/123?utm_term=brian+massie+concord+ohio In PDF document text
    • https://static.s123-cdn-static.com/uploads/4386839/normal_5fca969556d9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402707/normal_5f9f622aba517.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393193/normal_5f8f99fa9f305.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369914/normal_5fd880ebaafc6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477620/normal_5fbf1b6d6bf4b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/6964672869.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc779470d716e027b043af0/t/5fcfe97403de0e1408dbc680/1607461237731/tiny_dungeons_rpg.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/70073815471.pdfIn PDF document text
    • https://s3.amazonaws.com/vanatul/73539603419.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5a3ecc14dfd36fe11d045/t/5fcf7677505b451de18e2ef6/1607431799651/kart_racing_3d.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/zitexoma.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcdebdf8785af7abc616584/t/5fcffa6b86dbd518ecc649ef/1607465579648/prank_calls_dials_by_apps.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_off0000b763.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB763 5196 bytes
SHA-256: 2f2327c1f32305f9383962b172ec1d6eb900463e3bcca8a3e10f642f8aaca7e5
font_01_sfnt_off0000c8dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8DC 10312 bytes
SHA-256: b91a84f3cb4622602528800d295b2c7f1aa10e4d50fb58a4542b17b9452dc2c4

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