Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfb29a0e656c8dc0…

MALICIOUS

PDF

33.6 KB Created: 2020-08-13 23:43:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8aea88e8117118ebfaa6bace6fc51ee7 SHA-1: c37906ff51312555e7e4044f8c9635e067a44e78 SHA-256: cfb29a0e656c8dc00ec79a020da3e328512b12267164ce58b2b8855867dee4e5
120 Risk Score

Malware Insights

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

The PDF document contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=baldur%2527+s+gate+ii+enhanced+edition+manual'. This indicates a social engineering lure, likely attempting to trick the user into visiting a malicious site by disguising it as a game manual. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDFs, further supporting the malicious intent.

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=baldur%2527+s+gate+ii+enhanced+edition+manual
    • http://files.fatpackracing.com/uploads/1/3/0/8/130814682/c758e2a5505.pdf
    • http://files.youngcalebcarrblog.com/uploads/1/3/0/7/130738548/ba8eea1368.pdf
    • http://files.familiarstrangers.info/uploads/1/3/2/6/132696483/wepemap-zotipazozesin-gubipukapofo-dukapoz.pdf
    • http://files.childrensmarketatthemill.com/uploads/1/3/2/6/132682040/bonoripo.pdf
    • https://cdn.shopify.com/s/files/1/0437/8601/0776/files/wujeseb.pdf
    • https://cdn.shopify.com/s/files/1/0439/6105/7438/files/assam_tet_syllabus_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/3653/3151/files/1150885151.pdf
    • https://cdn.shopify.com/s/files/1/0428/3033/2070/files/89560998481.pdf
    • https://cdn.shopify.com/s/files/1/0430/2091/0746/files/xopoxadufotogezasitiki.pdf
    • https://cdn.shopify.com/s/files/1/0434/4712/4135/files/vawevipaluw.pdf
    • https://cdn.shopify.com/s/files/1/0430/2517/0595/files/74627543088.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/90442425312.pdf
    • https://cdn.shopify.com/s/files/1/0437/7749/1098/files/54999372514.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/57812502072.pdf
    • https://cdn.shopify.com/s/files/1/0440/9327/6312/files/luwiwivedodinojemo.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6654/files/fuvetanojozugajabopiku.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/moxudenolaruxorurafugi.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_off000045a9.bin
dbe5df9b6bf6145985ec177ca9936fcf46bc8e632aac2a964a43c49899591688
pdf-font-stream PDF embedded font (sfnt) at offset 0x45A9 5436 bytes
font_01_sfnt_off000057ef.bin
96477eff78c33f0cb3edf1927257a555ca42f2214b1a0ec394db2d888c742f75
pdf-font-stream PDF embedded font (sfnt) at offset 0x57EF 10136 bytes