Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bbccc2229f43c4e…

MALICIOUS

PDF

48.3 KB Created: 2020-08-11 09:31:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b193758f5fe2a19684a398150dda14a9 SHA-1: c3d8ddad16e817295220640455086bac8102fb90 SHA-256: 3bbccc2229f43c4ea65ed2096816fdee957346612dff841ff3a329458090fa0c
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF contains multiple embedded links, with one critical heuristic identifying a link to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a potential link farm or SEO poisoning tactic to distribute the malicious PDF. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=chaitanya+charitamrita+pdf+in+bengali
    • http://files.littlefrenchmarketcompany.com/uploads/1/3/1/4/131483209/9342348.pdf
    • http://loxus.docsjoininghands.com/uploads/1/3/1/3/131380505/9cadb734cf44.pdf
    • http://files.buycolorfest.com/uploads/1/3/0/7/130739198/d54bbf007eed.pdf
    • http://files.gilroyffa.com/uploads/1/3/1/3/131382841/2c24e44cb5b82.pdf
    • https://cdn.shopify.com/s/files/1/0428/7306/1532/files/4856325805.pdf
    • https://cdn.shopify.com/s/files/1/0430/6999/7207/files/xijadofewezegazos.pdf
    • https://cdn.shopify.com/s/files/1/0450/4364/6614/files/an_image_of_africa_racism_in_heart_of_darkness.pdf
    • https://cdn.shopify.com/s/files/1/0438/2218/6653/files/pubiz.pdf
    • https://cdn.shopify.com/s/files/1/0427/9785/8972/files/durubovopujojagukipugo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0951/5413/files/pejojobe.pdf
    • https://cdn.shopify.com/s/files/1/0436/2086/0064/files/14290174366.pdf
    • https://cdn.shopify.com/s/files/1/0433/0412/4571/files/92406274701.pdf
    • https://cdn.shopify.com/s/files/1/0430/0891/7657/files/87583658324.pdf
    • https://cdn.shopify.com/s/files/1/0427/6640/1692/files/aleister_crowley_deutsch.pdf
    • https://cdn.shopify.com/s/files/1/0435/0545/1174/files/20289024934.pdf
    • https://cdn.shopify.com/s/files/1/0429/8778/2297/files/8975915556.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_off00005df2.bin
a506a1980eb124b12bbff388872c561bf5a897e424bcfa5ef534127837e01fcf
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF2 5536 bytes
font_01_sfnt_off0000709c.bin
312714588259f5f535ffbfff87e959846e8fbc38b7cbb9332391303f7322b036
pdf-font-stream PDF embedded font (sfnt) at offset 0x709C 6384 bytes
font_02_sfnt_off0000858f.bin
e4b694d781bde864c01e0bc9cc6d6d1fd227b5ee0f9bb9ca46e4fbab19093c32
pdf-font-stream PDF embedded font (sfnt) at offset 0x858F 15004 bytes