Malicious PDF — malware analysis report

Static analysis result for SHA-256 30d1279592d53510…

MALICIOUS

PDF

38.4 KB Created: 2020-08-05 02:47:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f6bd651c49141006b4041bf0dea4918c SHA-1: a4a2ae852f048d5ac30e91a2b7fb11d937b3b6e0 SHA-256: 30d1279592d535106d3b8e7620d6e67bb641f3227c1b0331d6e6f5adfd8ae3d4
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. This indicates the document is designed to lure users to a potentially harmful destination. The presence of numerous other links, many hosted on cdn.shopify.com, suggests a link farm or SEO poisoning tactic to improve search engine visibility for malicious content. The ML classifier also strongly flagged this PDF as malicious.

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=makine+elemanlar%25C4%25B1+birsen+yay%25C4%25B1nevi+pdf
    • http://files.victoriaparkbc.com/uploads/1/3/1/4/131407152/1611533.pdf
    • http://files.songsforfamilies.com/uploads/1/3/0/8/130874672/5571168.pdf
    • http://files.msfullfigureddmv.com/uploads/1/3/2/3/132302764/7263586.pdf
    • http://files.centerofhopemtp.com/uploads/1/3/1/4/131410952/be925ba6e28.pdf
    • https://cdn.shopify.com/s/files/1/0428/5222/1091/files/83192868282.pdf
    • https://cdn.shopify.com/s/files/1/0437/2021/2645/files/zufidotonakasu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0496/0661/files/blm_manual_of_surveying_instructions.pdf
    • https://cdn.shopify.com/s/files/1/0435/7763/9075/files/jibobelixudejafana.pdf
    • https://cdn.shopify.com/s/files/1/0431/5797/9304/files/7344957607.pdf
    • https://cdn.shopify.com/s/files/1/0431/4628/1120/files/caucho_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0431/5188/4445/files/28510972195.pdf
    • https://cdn.shopify.com/s/files/1/0432/9573/5963/files/68441346422.pdf
    • https://cdn.shopify.com/s/files/1/0432/4913/9880/files/wunozajeketotu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0714/7162/files/42883319281.pdf
    • https://cdn.shopify.com/s/files/1/0434/9971/6770/files/86071547370.pdf
    • https://cdn.shopify.com/s/files/1/0436/4537/0518/files/40768157794.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_off000053d4.bin
10aecec69481e45040e5885d521781613c4ab56489692d0a9190e421ec33a9a1
pdf-font-stream PDF embedded font (sfnt) at offset 0x53D4 5588 bytes
font_01_sfnt_off000066d8.bin
a59540ffbba076386d1cd5cccee4da59dbf4cd97556264d648429d5a03608660
pdf-font-stream PDF embedded font (sfnt) at offset 0x66D8 11444 bytes