Malicious PDF — malware analysis report

Static analysis result for SHA-256 d96db63440409c94…

MALICIOUS

PDF

78.5 KB Created: 2020-12-25 06:40:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 5f21219b8f4cdcac2266506fd55a81d5 SHA-1: 9c288fa648e1c1921db6b67aeaf66206d31a5a83 SHA-256: d96db63440409c9479e247f9ff44307ba91daf8f8812dcd3469e895823ff4576
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'. This URL is presented in a way that suggests a phishing or scam attempt, using a movie title as a lure. The ML classifier and ClamAV also strongly indicate maliciousness. While no scripts were explicitly extracted, the nature of the embedded link and the PDF format suggest potential for further malicious actions, such as JavaScript execution to facilitate the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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/strik?utm_term=the+angry+birds+movie+2+characters+cast In PDF document text
    • https://cdn-cms.f-static.net/uploads/4449771/normal_5fd8797e08fb8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422628/normal_5f9acb5457b55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408718/normal_5fba4f6f12bce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460463/normal_5fd15a20720f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369142/normal_5f948bee205e2.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/lakadutof/woodland_elementary_school_kalamazoo_mi.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/dollar_coin_george_washington_1789-_1797.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/best_movie_download_app_for_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27f7ceea-6002-4f03-a568-512851006339/how_to_use_smart_switch_mobile_transfer.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/14555221958.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_off0000e69e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE69E 5492 bytes
SHA-256: 6c75d9021965499deffb848ffd42c14880ad3965b66bb67ffbb51a511a04177a
font_01_sfnt_off0000f928.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF928 11076 bytes
SHA-256: 36ed7a945c84dd582cff16557973682f90ef0d541f7cc21747ebfb1fdd53b663
font_02_sfnt_off00011f03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F03 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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