Malicious PDF — malware analysis report

Static analysis result for SHA-256 a97f15ce7ad8f2e0…

MALICIOUS

PDF

44.3 KB Created: 2020-09-01 14:45:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 743aff5dedc19458bc3918fdd54cfecc SHA-1: fa55e469caabd9b321348c495ded1a9bfc342ae1 SHA-256: a97f15ce7ad8f2e0b89e482cd512802e9cb6d47f5a866c05a29552fc3aaca0f2
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, pointing to 'https://ttraff.link/wix?keyword=writing+ionic+equations+questions+and+answers'. The document body also contains this URL, suggesting it is the primary lure. The file also exhibits characteristics of a link farm, with numerous embedded links to PDFs hosted on Shopify, likely to manipulate search engine results. 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.link/wix?keyword=writing+ionic+equations+questions+and+answers
    • https://cdn.shopify.com/s/files/1/0437/6428/5592/files/2547491503.pdf
    • https://cdn.shopify.com/s/files/1/0469/0319/7856/files/advanced_qt_programming.pdf
    • https://cdn.shopify.com/s/files/1/0437/6487/5418/files/79943578348.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8178/files/fire_fox_auto_refresh.pdf
    • https://cdn.shopify.com/s/files/1/0432/5684/0350/files/34149752068.pdf
    • https://cdn.shopify.com/s/files/1/0437/7185/5002/files/75893564898.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27360052690.pdf
    • https://cdn.shopify.com/s/files/1/0464/6466/3704/files/86794888094.pdf
    • https://cdn.shopify.com/s/files/1/0435/3576/1562/files/how_to_use_hastebin.pdf
    • https://static.usrfiles.com/ugd/b8c837_24f7d0fef4b5417e9c7205c9f62d74ad.pdf
    • https://static.usrfiles.com/ugd/b8c837_4ec54658663d40dda07b4a9180666798.pdf
    • https://static.usrfiles.com/ugd/60933b_af2c3f8cd95c4a979a51830a9db2b510.pdf
    • https://static.usrfiles.com/ugd/b8c837_5444f467fc5a44e5adaaa0d161119b7f.pdf
    • https://cdn.shopify.com/s/files/1/0463/4935/3122/files/gabemurajotifo.pdf
    • https://cdn.shopify.com/s/files/1/0433/9718/5701/files/93842666814.pdf
    • https://cdn.shopify.com/s/files/1/0428/9432/7961/files/bamelegajolazedemuweruno.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_off000061c9.bin
198617917378fdf7f3c5eff239dce61e871658cca50018a9dbaf066a431c6071
pdf-font-stream PDF embedded font (sfnt) at offset 0x61C9 5188 bytes
font_01_sfnt_off00007380.bin
77e411f9ef6c4380fb31c42637a633f2c9aefd326d71a494a9781126da4c6ccf
pdf-font-stream PDF embedded font (sfnt) at offset 0x7380 10172 bytes
font_02_sfnt_off000095fa.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x95FA 4324 bytes