Malicious PDF — malware analysis report

Static analysis result for SHA-256 e249abff65ad26f4…

MALICIOUS

PDF

39.5 KB Created: 2020-08-27 16:46:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d4155174b015e9004a6fdb1989f8696 SHA-1: e5c12e0ec4be9439eeae52efb683c804b0049872 SHA-256: e249abff65ad26f4b856ce92e04f303476f4e2f1f060a833eda7e19cf3273d9b
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, with a critical heuristic firing indicating a malicious redirector link to 'ttraff.com'. Another heuristic identified a large number of external PDF links, suggesting an SEO poisoning or link farm tactic. While no scripts were extracted, the sheer volume of links and the presence of a redirector strongly indicate a malicious intent to lure users to potentially harmful content.

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=p.r.+halmos+finite-dimensional+vector+spaces
    • http://rifik.coedsportswear.com/uploads/1/3/1/4/131406592/1d98f15.pdf
    • https://cdn.shopify.com/s/files/1/0437/8991/0165/files/22027141083.pdf
    • https://cdn.shopify.com/s/files/1/0437/8863/2213/files/7062185519.pdf
    • https://cdn.shopify.com/s/files/1/0431/4624/8358/files/68938377762.pdf
    • https://cdn.shopify.com/s/files/1/0430/5453/0709/files/12262412597.pdf
    • https://cdn.shopify.com/s/files/1/0433/4603/4853/files/fixidusevozexolin.pdf
    • https://cdn.shopify.com/s/files/1/0436/9675/0746/files/curious_george_books.pdf
    • https://cdn.shopify.com/s/files/1/0429/3469/8147/files/airplane_airbus_images_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/1110/5183/files/nukafunusen.pdf
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/cnco_reggaeton_song.pdf
    • https://cdn.shopify.com/s/files/1/0431/6325/4944/files/38862785056.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_off00005c33.bin
b31f0e4c02a78df79c296e37d23c2a763d27aadb5c44e6d56100dd75d0c6f4a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C33 5520 bytes
font_01_sfnt_off00006ee1.bin
e8bbb648a4b549025c82e6e17a8c327cf298be637b0997587e9746d204421fe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE1 10088 bytes

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