Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bb4a6d6ef06d884…

MALICIOUS

PDF

46.6 KB Created: 2020-09-01 00:04:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b8066fcc1e468b2667874d489fa42397 SHA-1: 8bfbd9de52cd4e4b3b1a8be4fb771433353cbcbf SHA-256: 3bb4a6d6ef06d8848ecb0a0d594fe543625a0c24c3b1b0bbb7fe04c3c666ae44
150 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The primary malicious URL is https://ttraff.com/pify?keyword=detachment+parents+guide, which is likely part of a phishing or scam campaign. The document body, though heavily obfuscated, contains references to this URL and other PDF links, supporting the attack pattern.

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.com/pify?keyword=detachment+parents+guide
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65022979336.pdf
    • https://cdn.shopify.com/s/files/1/0431/4847/6570/files/54641528402.pdf
    • https://cdn.shopify.com/s/files/1/0431/4316/8156/files/ca_medular_de_tiroides.pdf
    • https://cdn.shopify.com/s/files/1/0435/4513/3207/files/3ds_max_2020_book.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/zexoxatupomun.pdf
    • https://static.usrfiles.com/ugd/87fdc7_8a2bfb6cdfb849dc9b392ebb9ad95554.pdf
    • https://static.usrfiles.com/ugd/9e53d4_daecc34954494a5eae30f21b594ba45a.pdf
    • https://static.usrfiles.com/ugd/c7a620_9fa6952e73fd439586c276fefe971b5f.pdf
    • https://static.usrfiles.com/ugd/b8c837_2022674e470743d2b4a94ddb18289e38.pdf
    • https://cdn.shopify.com/s/files/1/0430/6924/3553/files/kenabi.pdf
    • https://cdn.shopify.com/s/files/1/0429/2853/7753/files/56776601313.pdf
    • https://cdn.shopify.com/s/files/1/0433/3223/9528/files/javascript_reverse_string.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_off0000783e.bin
46d1021b5c550d52aa1b881825ea3aa665dd026149da08690494e68b41a44cfc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x783E 5452 bytes
font_01_sfnt_off00008a9e.bin
fe2674bc78fbd1ca97f3f7be66c7b5cd24b8886a4a5432f423fe4976cbb83ed1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A9E 10420 bytes

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