Malicious PDF — malware analysis report

Static analysis result for SHA-256 37159745b107ee35…

MALICIOUS

PDF

43.3 KB Created: 2020-08-04 11:17:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f07d79cc7a6f66e7eb4f145f38834af SHA-1: 009a399aad37f4d6f4b11eb5260a64dd9d738a58 SHA-256: 37159745b107ee354074d70e8db8bd644d9ed18ec53fa0ff65ec64717c58813e
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a SE_INVOICE_LURE heuristic firing, indicating it is designed as a fake invoice or payment scam. It also contains a PDF_MALICIOUS_REDIRECTOR_LINK heuristic, pointing to the URL https://ttraff.ru/pify?keyword=b.+pharm+government+colleges+in+tamilnadu+pdf, which is known to host malicious redirectors. The PDF_SEO_LINK_FARM heuristic indicates a large number of embedded links, likely for SEO manipulation or to distribute further malicious content. 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=b.+pharm+government+colleges+in+tamilnadu+pdf
    • http://files.scatkofamilychiropractic.com/uploads/1/3/1/8/131856271/bogor_funefeg_lixanoxipodonu_nuwanaxitapeni.pdf
    • http://dovorofe.localcraft.net/uploads/1/3/1/1/131163667/5348560.pdf
    • http://files.georgesweeneyarchitect.com/uploads/1/3/0/7/130739719/8363314.pdf
    • http://files.songofhopeus.com/uploads/1/3/0/9/130969695/dibiboni.pdf
    • https://cdn.shopify.com/s/files/1/0429/5789/7882/files/ditivatizofo.pdf
    • https://cdn.shopify.com/s/files/1/0440/8921/3093/files/18343872982.pdf
    • https://cdn.shopify.com/s/files/1/0436/9724/2280/files/bumew.pdf
    • https://cdn.shopify.com/s/files/1/0438/5685/5190/files/53358516346.pdf
    • https://cdn.shopify.com/s/files/1/0431/1715/0368/files/sosebet.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wonazonuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/3792/5269/files/59528807669.pdf
    • https://cdn.shopify.com/s/files/1/0438/2621/7120/files/discord_code_block_color.pdf
    • https://cdn.shopify.com/s/files/1/0432/0336/2973/files/bupozoxav.pdf
    • https://cdn.shopify.com/s/files/1/0430/3893/3146/files/pejeraburaritobu.pdf
    • https://cdn.shopify.com/s/files/1/0429/3758/1734/files/karl_jenkins_benedictus_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0430/2657/9610/files/96973275015.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a03.bin
def600ae9af5c323692a9a1e866f23a8b90b1821092dda3a5bc4699f4f021562
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A03 5708 bytes
font_01_sfnt_off00007d59.bin
6f3127a466116568ef914bbc787b5708bc4231b59e49a62a18118f00cdb7beea
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D59 10192 bytes