Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d4fc6cb6ed44454…

MALICIOUS

PDF

66.9 KB Created: 2020-12-19 20:09:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 4f235a38b07e9f5cd97a7986b58d517b SHA-1: e7f098f7b38ccad032a3275e22d0de8e1d2f2f4c SHA-256: 8d4fc6cb6ed4445495e53247f47ee92130e0c861fc16705509e5fb2656745c79
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 'ggtraff.ru'. ML classification and ClamAV also flagged the file as malicious. The embedded URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content.

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://ggtraff.ru/123?utm_term=lavaloonion+guide+th10 In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jezekemunidup/39445793196.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/89457015618.pdfIn PDF document text
    • https://s3.amazonaws.com/zubuwujoxom/super_smash_bros._for_nintendo_3ds_and_wii_u.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4c874f98375720d6994c/1606372492484/dezodokasiwusa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/243f433e-88e8-4765-88c9-2f97892eed7d/intermediate_microsoft_word_skills.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c4a2ff5-e506-4904-8442-b037a6cfdd4a/steam_key_generator_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc00c29085bf90c0ef85582/t/5fc145ecfa04221c714e71e8/1606501869668/kibopilele.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6a0bbf7cf8c754052888c/t/5fd1c0ba99fe644e8a5fd0e8/1607581883066/escape_room_zombie_labor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6e42ca9-6776-4709-8bc7-0619f140754c/radojuru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d673cd3-040b-4c04-b0f3-ffd3bad95a26/muwibiludajexadoga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff2a8dc0-a478-43a3-842b-65f0f2155a78/nawuzulatoju.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_off0000ca45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA45 5008 bytes
SHA-256: 096e73a6023da796a0d1b98a2664117855fecc472e925ed25c770c7b489829ba
font_01_sfnt_off0000db5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB5F 10632 bytes
SHA-256: dc846e8a3940b633ac49fef99dda52c2fbe939e5a1475d7649a40180cd744fb5

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