Malicious PDF — malware analysis report

Static analysis result for SHA-256 c68fff34474b1a2b…

MALICIOUS

PDF

50.7 KB Created: 2020-08-22 15:24:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bfc2ce4e931192ceda46401e363663d0 SHA-1: e1734b1e87ffcaf700c675fccb540cd747de97ff SHA-256: c68fff34474b1a2bb54ad3fcdb40af5ea732656f75d2e0d2f6d3545c9008adb8
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru' with a keyword suggesting cracked software. The document body also contains this URL, reinforcing the lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The primary malicious URL is likely intended to redirect the user to a site hosting malware or further phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.ru/pify?keyword=blackmart+pro+cracked+apk
    • http://soxir.countryblastradio.com/uploads/1/3/0/7/130738779/21486d34204af2.pdf
    • http://files.columbiadentcenter.com/uploads/1/3/0/9/130969910/jubegonakajij-desagomabof-sateno-pikilolot.pdf
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/nobijagekaze.pdf
    • https://cdn.shopify.com/s/files/1/0437/8260/2913/files/awg_wire_chart.pdf
    • https://cdn.shopify.com/s/files/1/0440/9799/4904/files/45788598941.pdf
    • https://cdn.shopify.com/s/files/1/0430/9604/7783/files/tudowa.pdf
    • https://cdn.shopify.com/s/files/1/0438/5426/6533/files/73008574763.pdf
    • https://cdn.shopify.com/s/files/1/0428/9665/4489/files/16568800392.pdf
    • https://cdn.shopify.com/s/files/1/0431/7331/4715/files/vatra_i_nista_branko_miljkovic.pdf
    • https://cdn.shopify.com/s/files/1/0437/1356/0727/files/cub_cadet_lt_1050_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/8649/5397/files/47737335295.pdf
    • https://cdn.shopify.com/s/files/1/0428/0057/8723/files/mibixuduvazadirutusag.pdf
    • https://cdn.shopify.com/s/files/1/0454/2480/3998/files/42083291238.pdf
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/dubai_metro_map.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ed3.bin
d81ec78babd689ace240e971a8e1c42cc9c3393ba152220237d3a0405b323712		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED3 4788 bytes
font_01_sfnt_off00006f13.bin
90f082cd72311a2aa323b8d3e5a7eb6610e3481209c38e9b08ff6d2d414e8745		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F13 10120 bytes
font_02_sfnt_off000091f0.bin
8fbf93f29a95995cc6cb645ab60f08c4727de5fe45743dfa564a7ec0a59e9085		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91F0 16368 bytes
font_03_sfnt_off0000a7bb.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA7BB 4324 bytes
font_04_sfnt_off0000b56f.bin
74be5bc4d46f64e5c506ae1006f7022dc98ebf960e37c7bf417c2027ca73106d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB56F 1736 bytes

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