Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd3eb9d50c234ed4…

MALICIOUS

PDF

62.4 KB Created: 2020-09-16 18:48:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6456d1f2acaab2fac43aa25166ab1668 SHA-1: 09868dbb4ab73e707174bd7ee6bc5006de5a8402 SHA-256: bd3eb9d50c234ed44b48a9fae446fde7bc6aa53e691628d374bed985fbcfe7eb
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.me/wix?keyword=emirates+nbd+mission+statement'. The document body, though heavily obfuscated, includes this URL and appears to be a lure related to 'Emirates NBD mission statement'. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or redirection strategy to obscure the ultimate destination. The primary malicious URL is the most critical IOC.

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.me/wix?keyword=emirates+nbd+mission+statement
    • https://cdn.shopify.com/s/files/1/0429/4973/8650/files/81933547088.pdf
    • https://cdn.shopify.com/s/files/1/0433/8827/2805/files/motikifopigesiwok.pdf
    • https://cdn.shopify.com/s/files/1/0428/5225/3863/files/curso_de_espanhol_bsico.pdf
    • https://b5602a9f-7d32-4e80-8f2d-7f80397e5b17.filesusr.com/ugd/36d413_01bc2b83a23e4587ac4625b39a0b7555.pdf?index=true
    • https://35a6b2bf-0d45-4ae0-aa17-f2ea38ea0f8a.filesusr.com/ugd/e2b09b_8799e1e76a9f4f3d99bb756767c74a77.pdf?index=true
    • https://e4e06f3b-4d4d-4a12-a091-6caaf84afef4.filesusr.com/ugd/cc3ca9_f19dfec970214b6eaea276670c9cdcd3.pdf?index=true
    • https://8e6322f1-ce9f-4b43-ae6c-8e43d04dba42.filesusr.com/ugd/8c2e83_cf4035166ba2435db8d6c17ecb2e0f11.pdf?index=true
    • https://c5820045-c0d6-430a-b988-224c4fc7ba48.filesusr.com/ugd/384ea4_4af3af3088924c53b1d8be1995a6bd31.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/garul.pdf
    • https://cdn.shopify.com/s/files/1/0434/6265/6165/files/laxepemijuwasek.pdf
    • https://cdn.shopify.com/s/files/1/0439/5368/4638/files/joseph_e._johnston_narrative_of_military_operations.pdf
    • https://cdn.shopify.com/s/files/1/0429/8548/8543/files/48449079607.pdf
    • https://cdn.shopify.com/s/files/1/0434/3762/1404/files/birla_sun_life_mutual_fund_sip_form.pdf
    • https://cdn.shopify.com/s/files/1/0431/1239/9009/files/84090888815.pdf
    • https://cdn.shopify.com/s/files/1/0436/2852/7776/files/cmos_operational_amplifiers.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009576.bin
b7f317aa0f29cd34df008dc84d8f376d2685882a57a4a5cd0d86477d0adf885a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9576 2828 bytes
font_01_sfnt_off00009f71.bin
4f978993b6141e6483cb13d2fb74ae7fee807837e50baaa63d275d53c17d62a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F71 5036 bytes
font_02_sfnt_off0000b06e.bin
04664b4d015f7b94c014122dd991d64d8a4c40a6332364b5cccfa14f77bb165b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB06E 10120 bytes
font_03_sfnt_off0000d34f.bin
a24b379294965881213f6bc3e9db9f5314a2d8a06b10cd027b2e5f3c9ddd95e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD34F 16488 bytes

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