Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c11f1269c4c9d61…

MALICIOUS

PDF

53.5 KB Created: 2020-08-10 13:47:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e1727e7c4e02f031dfd650e4354881d SHA-1: fb9a066cca0a0abfb9eff9ddd80fcd718fde4ce1 SHA-256: 4c11f1269c4c9d61f4f01567947f58f0c73fe8e10d2d154f90ea75fb6738be15
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=boogiepop+light+novel+pdf'. This indicates the document is designed to trick users into navigating to a potentially harmful site, likely for phishing or malware distribution. The presence of numerous external PDF links, many hosted on shopify.com, suggests a link farm or SEO poisoning tactic to obscure the malicious redirector. No scripts were extracted, but the PDF structure and embedded links strongly suggest a social engineering attack.

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.cc/pify?keyword=boogiepop+light+novel+pdf
    • http://files.ctgrapes.org/uploads/1/3/1/4/131407709/didovoka_fadixevi.pdf
    • http://files.mackenzieemievents.com/uploads/1/3/0/7/130775903/lududevak.pdf
    • http://files.langleycyberpatriot.org/uploads/1/3/2/6/132695851/teguvav.pdf
    • https://cdn.shopify.com/s/files/1/0437/5789/5831/files/10938605877.pdf
    • https://cdn.shopify.com/s/files/1/0427/8052/4710/files/dajugeripowazazaxul.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/zoviteren.pdf
    • https://cdn.shopify.com/s/files/1/0437/1110/3128/files/tecumseh_carb_adjust.pdf
    • https://cdn.shopify.com/s/files/1/0444/8436/2407/files/91750021815.pdf
    • https://cdn.shopify.com/s/files/1/0429/9243/5359/files/gekofujugu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6769/5509/files/popolok.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/62654677968.pdf
    • https://cdn.shopify.com/s/files/1/0429/6507/4086/files/pijefeloxulofegiwinenes.pdf
    • https://cdn.shopify.com/s/files/1/0438/4597/6224/files/56457891563.pdf
    • https://cdn.shopify.com/s/files/1/0427/3196/2535/files/6103168049.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/fokupariwivemikewutulisix.pdf
    • https://cdn.shopify.com/s/files/1/0454/3184/9128/files/process_skills_in_problem_solving.pdf
    • https://cdn.shopify.com/s/files/1/0431/2812/7654/files/clifford_the_big_red_dog_story.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e55.bin
c458fbeaf2c9fe7b9d33f6215843686e56412aa686af738791ad9c897466e500
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E55 13948 bytes
font_01_sfnt_off00008b87.bin
1658f44e1431158aad3dc07f7ced95ea4ede82042a65d1f62ed7fa47977c6d83
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B87 4928 bytes
font_02_sfnt_off00009c59.bin
8701347835c6d0a3821741e57a707dbc4d46b3c4c5cccf45e4b4c9c4189eeda6
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C59 14360 bytes