Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5c3a2c554f941d0…

MALICIOUS

PDF

33.3 KB Created: 2020-10-30 08:48:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ab523a19e4d6033d2c7137b381b7bb5 SHA-1: 7eca369e39dc081941cc67f1b8f0979b33c7227c SHA-256: c5c3a2c554f941d0a469aeaa73f67dc3b17033a89ce1b19a623649a655af89df
94 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.club/123?keyword=skull+and+shackles+map+folio+pdf'. The document body, though partially garbled, includes text related to 'skull and shackles map folio pdf' and the malicious URL, suggesting a lure. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL indicates an attempt to redirect the user to a potentially harmful site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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://ttraff.club/123?keyword=skull+and+shackles+map+folio+pdf
    • https://regajuwanuduxis.weebly.com/uploads/1/3/4/3/134319991/mifejumidunug.pdf
    • https://gejatovuri.weebly.com/uploads/1/3/1/4/131406669/251edb27656b61.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wunojipu/jigunuzirosuz.pdf
    • https://uploads.strikinglycdn.com/files/87c6d1e7-a6b2-4ce8-92d8-a50cd44177cd/gipozow.pdf
    • https://s3.amazonaws.com/dogazisuze/solidworks_exercises_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0482/9629/6612/files/nobaxuginomirexemeruwe.pdf
    • https://cdn.shopify.com/s/files/1/0502/2072/8478/files/oracle_cloud_financials_implementation_guide.pdf
    • https://uploads.strikinglycdn.com/files/fc6add33-984f-4a98-aefd-f06da993bec7/jawbone_up_2_instructions.pdf
    • https://cdn.shopify.com/s/files/1/0503/0307/4469/files/chad_mitchell_trio_lizzie_borden.pdf
    • https://cdn.shopify.com/s/files/1/0508/2192/3001/files/terra_cotta_fragment_artist.pdf
    • https://cdn.shopify.com/s/files/1/0502/4514/0657/files/download_enrich_your_ielts_vocabulary.pdf
    • https://cdn.shopify.com/s/files/1/0501/5784/6703/files/weresezazuguxuturoluket.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_off0000428c.bin
897a90ae4eb4c7796d17cdd5c9abb8877f8cbb7996347bae4980e1d06ee5b624
pdf-font-stream PDF embedded font (sfnt) at offset 0x428C 5468 bytes
font_01_sfnt_off00005508.bin
66e72dcc4adb312abaa6c42fad55de22bb4af1b7ea860ac3bebcb2b350c09d8c
pdf-font-stream PDF embedded font (sfnt) at offset 0x5508 10136 bytes