Malicious PDF — malware analysis report

Static analysis result for SHA-256 3aad6e77f7132c5b…

MALICIOUS

PDF

67.1 KB Created: 2020-12-23 16:47:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: adbfec17ed27424951b39d6fac64915f SHA-1: 9f9ee51e992038548071ab8d2118ce788ea786fa SHA-256: 3aad6e77f7132c5b4e7e02f35cec574d26f58362efc1490897e88d4a25ec5fe3
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, 'https://traffmen.ru/strik?utm_term=download+toca+blocks+1.+2.+1+download', is designed to trick users into downloading potentially malicious content. The ML classifier also strongly flagged this PDF as malicious, supporting the phishing and redirection attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffmen.ru/strik?utm_term=download+toca+blocks+1.+2.+1+download
    • https://cdn.sqhk.co/razupojoja/jfn7Tij/stick_of_titan_2.pdf
    • https://cdn.sqhk.co/babakobesuxe/CIgfg0N/manifitakaxadepowegape.pdf
    • https://cdn.sqhk.co/dumoniriwo/h0gjZhg/prezi_templates_free_ocean.pdf
    • https://cdn.sqhk.co/sakiforivona/ETgfNjT/server_definition_for_resume.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/50bf55e7-ff5b-42c4-b054-1f002d4a2faf/kukori.pdf
    • https://s3.amazonaws.com/tokudapele/20765878306.pdf
    • https://s3.amazonaws.com/ronatiduzoxij/79522747607.pdf
    • https://uploads.strikinglycdn.com/files/203c23ae-5db1-4367-8de8-c4ebf644aeb2/33351763367.pdf
    • https://uploads.strikinglycdn.com/files/89a61a6a-d9b1-442f-816d-ce955912a466/74764778303.pdf
    • https://s3.amazonaws.com/vifusupegiza/grace_greater_than_our_sin_ukulele.pdf
    • https://s3.amazonaws.com/mozirolinitaje/bio_data_sample_format.pdf
    • https://s3.amazonaws.com/tupofelasujewas/cbse_board_exam_datesheet_2019_class_10.pdf
    • https://uploads.strikinglycdn.com/files/140af061-9fa1-438a-a98d-50f86dd792c0/61521301777.pdf
    • https://uploads.strikinglycdn.com/files/c7b4523d-2ba4-434f-98aa-9aab82833f65/fight_club_bollywood_movie_download.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd69.bin
cbb865e6bc823773d1c677de2cbafa37ade5086f6e06ea7f21813293c5ca3a05
pdf-font-stream PDF embedded font (sfnt) at offset 0xCD69 5348 bytes
font_01_sfnt_off0000dfd0.bin
bc0056958da3a56a6c9c80f758a6179835b3e16b66eb16800e38ecc19c5bffdf
pdf-font-stream PDF embedded font (sfnt) at offset 0xDFD0 9300 bytes