Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1219f7aded505c8…

MALICIOUS

PDF

53.3 KB Created: 2020-07-31 06:15:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e3357e5a58ef750e970b24c76d7e2224 SHA-1: 604bc17a967056797a56bcb94b1c574ea0b99332 SHA-256: d1219f7aded505c81b6e2851fc8d3a428c269c655a30981706d98916d7b45f09
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure for 'Gta 5 full cheats pc pdf download' and is heavily populated with external links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic. One critical heuristic firing indicates a link to known malicious redirector infrastructure at 'ttraff.cc'. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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.
  • 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.cc/pify?keyword=gta+5+full+cheats+pc+pdf+download
    • http://files.agilityredux.com/uploads/1/3/1/3/131383964/gijugutuwazowi.pdf
    • http://files.americancatalyst.org/uploads/1/3/0/8/130874610/mofogexegozobofazup.pdf
    • http://files.excellentwoodturning.com/uploads/1/3/0/8/130814219/94fd1408a2d1d4.pdf
    • https://cdn.shopify.com/s/files/1/0430/9437/6599/files/78389547481.pdf
    • https://cdn.shopify.com/s/files/1/0434/4738/6268/files/36743037498.pdf
    • https://cdn.shopify.com/s/files/1/0432/0965/4432/files/bewesoxi.pdf
    • https://cdn.shopify.com/s/files/1/0433/5032/7451/files/63293991606.pdf
    • https://cdn.shopify.com/s/files/1/0435/4077/5064/files/sirefi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9952/files/20722390797.pdf
    • https://cdn.shopify.com/s/files/1/0431/3671/2861/files/disonetavurigubekumire.pdf
    • https://cdn.shopify.com/s/files/1/0435/3431/9776/files/wusesifezeb.pdf
    • https://cdn.shopify.com/s/files/1/0428/9350/8771/files/7093488428.pdf
    • https://cdn.shopify.com/s/files/1/0431/6138/7170/files/37376791672.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009249.bin
e7d042c1bae6c3092e2813b1dce5bbcf3d0ade6f332cc7b98d534bfbaff9fa88
pdf-font-stream PDF embedded font (sfnt) at offset 0x9249 5228 bytes
font_01_sfnt_off0000a429.bin
1b9d498339239bb81bd788f500d45e76e320bf46e13600e3ce93cb1c2b50c569
pdf-font-stream PDF embedded font (sfnt) at offset 0xA429 10540 bytes