Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c34c4840db20659…

MALICIOUS

PDF

58.6 KB Created: 2020-08-08 16:09:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be9336ae887ba9482e5c05bd90fb6cb6 SHA-1: ee971b467dbd4ba66e3455e0ba668ae53652fbd0 SHA-256: 7c34c4840db20659353e2b676b2a6eb704181783a3851879b697efa13d0e277a
160 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 pointing to 'https://ttraff.ru/pify?keyword=bosonoga+bogini+pdf'. Additionally, it exhibits characteristics of an advance-fee scam, using lures related to prizes or parcels. The document body, though heavily obfuscated, contains the malicious URL and appears to be generated by wkhtmltopdf, a tool often used to create malicious PDFs. The presence of numerous embedded URLs, including a link farm hosted on Shopify, further supports the malicious intent.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=bosonoga+bogini+pdf
    • http://xarotinab.vintageracer.net/uploads/1/3/0/7/130776208/bijizo.pdf
    • http://files.cybersonics.net/uploads/1/3/0/7/130775859/46f229d88.pdf
    • http://mizaxajoj.nadialouderback.com/uploads/1/3/0/8/130813747/8c140dbe2116e9.pdf
    • http://files.erlendevensen.com/uploads/1/3/1/3/131379439/8704459.pdf
    • http://files.safedrycincinnati.com/uploads/1/3/1/3/131379194/7c099ccc12e9ca.pdf
    • https://cdn.shopify.com/s/files/1/0431/0201/1548/files/scion_tc_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/4294/6715/files/dilijabojixolupogig.pdf
    • https://cdn.shopify.com/s/files/1/0437/5419/3047/files/87797021061.pdf
    • https://cdn.shopify.com/s/files/1/0431/4143/1464/files/28673072690.pdf
    • https://cdn.shopify.com/s/files/1/0432/2718/5309/files/80271638724.pdf
    • https://cdn.shopify.com/s/files/1/0430/6547/5229/files/68390317275.pdf
    • https://cdn.shopify.com/s/files/1/0438/5721/5648/files/81374939392.pdf
    • https://cdn.shopify.com/s/files/1/0433/2421/1354/files/goxagijumipuxenebuvemoxat.pdf
    • https://cdn.shopify.com/s/files/1/0433/9207/3895/files/tales_of_two_wastelands.pdf
    • https://cdn.shopify.com/s/files/1/0430/2834/9085/files/fimojasuf.pdf
    • https://cdn.shopify.com/s/files/1/0428/1624/1831/files/16781999253.pdf
    • https://cdn.shopify.com/s/files/1/0440/6778/2821/files/bovokogulelolomifodu.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_off0000a82c.bin
752893f18f08de9f5b24c2dfcc87933cb029df6c75abeca5dad2309d70968395
pdf-font-stream PDF embedded font (sfnt) at offset 0xA82C 5268 bytes
font_01_sfnt_off0000ba30.bin
39abc1837e3e3a808f4b5701bb38a6a120b0fbe3174259c212f1e97c3f2aebc4
pdf-font-stream PDF embedded font (sfnt) at offset 0xBA30 10308 bytes