Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4f92f106f47687b…

MALICIOUS

PDF

40.5 KB Created: 2020-08-31 12:56:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 417c054f9d0453f6ca70b8306d9a5ae8 SHA-1: e143564eca0aec2001740b1e1463de4a7365e33f SHA-256: e4f92f106f47687be4828097de5f8195cb178c8e203531187c7de3be29728561
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wix?keyword=g%25C3%25BCl+ahmedim+ilahi+s%25C3%25B6zleri+indir'. This URL is presented within the document body, disguised as a search result for song lyrics, aiming to trick users into clicking it. The file also exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify domains, likely for SEO manipulation or to obscure the malicious redirector. No scripts were extracted, and the document body itself is heavily obfuscated, but the presence of the malicious redirector is a strong indicator of 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/wix?keyword=g%25C3%25BCl+ahmedim+ilahi+s%25C3%25B6zleri+indir
    • https://cdn.shopify.com/s/files/1/0437/5845/2897/files/36456508791.pdf
    • https://cdn.shopify.com/s/files/1/0428/8184/3353/files/50414440942.pdf
    • https://cdn.shopify.com/s/files/1/0437/9597/2256/files/20470093567.pdf
    • https://cdn.shopify.com/s/files/1/0432/8197/3416/files/lusuridamulu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6112/5015/files/lalanorujavabe.pdf
    • https://cdn.shopify.com/s/files/1/0431/8999/3635/files/angel_of_music_cello_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0431/1705/2066/files/63930949629.pdf
    • https://cdn.shopify.com/s/files/1/0437/9102/4280/files/rogusururufunekavek.pdf
    • https://static.usrfiles.com/ugd/7c3584_8a7c3017d6bb459180ae1e02966bdbd9.pdf
    • https://static.usrfiles.com/ugd/7d1dc9_1144607f1f1c406593ea7770e51679ed.pdf
    • https://cdn.shopify.com/s/files/1/0435/0499/2408/files/osrs_recipe_for_disaster_lumbridge_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/9439/2485/files/hallelujah_shrek_sheet_music.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f13.bin
0a3754a8a25f6820d603f5b19950dfb32730bc323212ca6369759ee4d0031e79
pdf-font-stream PDF embedded font (sfnt) at offset 0x4F13 5004 bytes
font_01_sfnt_off00005fe0.bin
469f9a69a65403894b5a7ed7c0e24ab550c338b81049a6a176c1c432d67d5bb8
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE0 11952 bytes
font_02_sfnt_off000084f3.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x84F3 4324 bytes