Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e51584aaa907c76…

MALICIOUS

PDF

45.5 KB Created: 2020-08-03 12:19:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ed4cef38bd41d7faa445dcfe0faa42d SHA-1: 8b751768ae9feb00ecca61be5d3fa55a4972f2a0 SHA-256: 1e51584aaa907c766dcea3c3a2b3c83c08d242fc764a175bed8d310173c0afb9
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.cc', which is used in a lure for 'Christian theology pdf books'. This link is presented as a way to access a PDF, but it redirects to malicious infrastructure. The document also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic. No scripts were extracted from this sample.

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.cc/pify?keyword=christian+theology+pdf+books
    • http://files.nourishandthriveforlife.com/uploads/1/3/0/7/130775320/fa27e61739a.pdf
    • http://files.intervarsityutah.org/uploads/1/3/2/8/132814050/wuwexi.pdf
    • http://files.southingtonjaycees.com/uploads/1/3/2/6/132682303/9d0cf.pdf
    • http://files.peterblackphotos.com/uploads/1/3/1/3/131383838/wurosaf_rirefefozux_sesaji_zovawususoka.pdf
    • http://files.siennapagett.com/uploads/1/3/1/3/131380995/ketipukazibavivaze.pdf
    • https://cdn.shopify.com/s/files/1/0427/9658/1020/files/8979282515.pdf
    • https://cdn.shopify.com/s/files/1/0439/1239/6968/files/tuboxab.pdf
    • https://cdn.shopify.com/s/files/1/0436/1538/7811/files/37109692260.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/mejizelomerelunorotuwuxu.pdf
    • https://cdn.shopify.com/s/files/1/0441/2515/9576/files/57851046627.pdf
    • https://cdn.shopify.com/s/files/1/0432/8580/7269/files/54406074667.pdf
    • https://cdn.shopify.com/s/files/1/0429/9007/6067/files/jitanamojeruwila.pdf
    • https://cdn.shopify.com/s/files/1/0428/7463/4403/files/88851514297.pdf
    • https://cdn.shopify.com/s/files/1/0431/1184/1958/files/gowiluzofatuki.pdf
    • https://cdn.shopify.com/s/files/1/0432/7034/0772/files/sizabisozotusebesamipera.pdf
    • https://cdn.shopify.com/s/files/1/0438/3604/7525/files/ropaligizutevezezovof.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9870/files/4038537545.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_off0000730b.bin
778ae19b35a71305c82f2b8ac7b902ce673f408224e5481aa45f9911306738c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x730B 5512 bytes
font_01_sfnt_off000085bd.bin
801b015598dcfbbf81afc71ebd9090814c046b698cfb83305b0cb7ca25c0f94e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85BD 10232 bytes

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