Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc4b1d41e2a2514d…

MALICIOUS

PDF

52.8 KB Created: 2020-08-14 18:49:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75c8b7e3dc690f4efb15131e44b5f08f SHA-1: 75dedc436c8ddb2b467a7a7d64a92f9ec4070b6e SHA-256: bc4b1d41e2a2514d8e272c2aca377858a1e7fa39a5be89ab69164a1b9292c7fd
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, which is designed to lead users to malicious content. The document body, though heavily obfuscated, contains the same URL and references a 'guide', suggesting a social engineering lure. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm used to obscure the true malicious destination.

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=basic+ecclesial+community+guide
    • http://files.loreescience.ca/uploads/1/3/0/7/130738970/2320681.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/xufenuzotij.pdf
    • https://cdn.shopify.com/s/files/1/0430/7160/2855/files/zotejuvuf.pdf
    • https://cdn.shopify.com/s/files/1/0452/2446/0445/files/3433463711.pdf
    • https://cdn.shopify.com/s/files/1/0432/3993/2064/files/31202645108.pdf
    • https://cdn.shopify.com/s/files/1/0434/0632/7957/files/vakuwixekasesodunezunuki.pdf
    • https://cdn.shopify.com/s/files/1/0431/8747/0499/files/sujuvipetaferisesujomiz.pdf
    • https://cdn.shopify.com/s/files/1/0431/7370/7925/files/25331414570.pdf
    • https://cdn.shopify.com/s/files/1/0434/6681/7689/files/jafuxutimimo.pdf
    • https://cdn.shopify.com/s/files/1/0447/8458/2813/files/pokemon_emerald_rare_candies_gameshark_code.pdf
    • https://cdn.shopify.com/s/files/1/0429/1562/7175/files/mefavosimofukoxodizolow.pdf
    • https://cdn.shopify.com/s/files/1/0430/9604/7783/files/60307709005.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_off00009229.bin
43f4e1bdc9c67a2b6db76f3b0c5081f991ee67c8e7cbc1af8e4c99deb415c505		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9229 5316 bytes
font_01_sfnt_off0000a42b.bin
3821a1ddf2fd4a0d07fc9ef512e937c8ee1b13ace2e1fd9020f07ec22ff3be33		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA42B 10240 bytes

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