Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc237562c89d0854…

MALICIOUS

PDF

129.1 KB Created: 2020-08-19 00:10:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9395352181ec22347f2c47d62b0ac3cf SHA-1: 99169e14859177bfc700f68891f8ff6cef6ba94c SHA-256: bc237562c89d085469d627b3fc24664d2d87057ba592f86e3475f0a962a0c586
128 Risk Score

Malware Insights

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

The PDF file contains a SE_INVOICE_LURE heuristic, indicating it's designed as a fake invoice or payment scam. It also features a PDF_MALICIOUS_REDIRECTOR_LINK pointing to 'ttraff.ru', which is known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic suggests the document is part of a larger link farm, likely to improve search engine ranking for malicious content. The primary malicious URL identified is 'https://ttraff.ru/pify?keyword=public+health+act+2005+mandatory+reporting'. 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=public+health+act+2005+mandatory+reporting
    • http://vojupub.phildubnick.com/uploads/1/3/2/7/132740478/bimuxivogepedoduxezu.pdf
    • http://files.valleyfarm.ca/uploads/1/3/1/4/131454521/9401635.pdf
    • http://files.writerworker.com/uploads/1/3/1/4/131405948/ronizofobumatex-defevibuparino-regezedojaduje-wuwubobawut.pdf
    • http://xalifa.shopcountrybarn.com/uploads/1/3/2/6/132681464/1659650.pdf
    • https://cdn.shopify.com/s/files/1/0437/4138/0759/files/exemple_de_biographie_personnelle.pdf
    • https://cdn.shopify.com/s/files/1/0438/4089/7181/files/40389764181.pdf
    • https://cdn.shopify.com/s/files/1/0431/3861/3415/files/40354324142.pdf
    • https://cdn.shopify.com/s/files/1/0434/7353/5138/files/37038907403.pdf
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/winurupizoverojotedemu.pdf
    • https://cdn.shopify.com/s/files/1/0437/0097/7816/files/3961980010.pdf
    • https://cdn.shopify.com/s/files/1/0438/5223/4917/files/39448256508.pdf
    • https://cdn.shopify.com/s/files/1/0431/6086/2874/files/amish_tripathi_raavan_enemy_of_aryavarta_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/4059/5352/files/vavox.pdf
    • https://cdn.shopify.com/s/files/1/0428/3655/7987/files/72426908281.pdf
    • https://cdn.shopify.com/s/files/1/0434/1425/7820/files/puzupo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7118/4794/files/jurovexarelefad.pdf
    • https://cdn.shopify.com/s/files/1/0432/2898/7547/files/fonowagokukox.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_off0001b004.bin
b3a07fde8420a423f67c5a1ef9539953f7434e11feae4fff17148f6d962fdb8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B004 5832 bytes
font_01_sfnt_off0001c3ac.bin
df62c48453d8fc0e9a66173a3ed7e5b5492779d2acdfebb3dd37fb80b7b43237		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1C3AC 10844 bytes
font_02_sfnt_off0001e80a.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1E80A 4324 bytes

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