Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eec4341de20db83…

MALICIOUS

PDF

33.3 KB Created: 2020-08-30 16:52:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 651d0a15ffae9c25337643edda9bab21 SHA-1: 7bd8b228b4732390bb805f4e20bfa6f79947a1e0 SHA-256: 9eec4341de20db83e0325db2114f3a4f12f19616bc18317185e3c5ce8307a0cd
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting seemingly unrelated PDF files, characteristic of an SEO link farm. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.cc/wix?keyword=mortal+kombat+armageddon+rom'. This suggests the document is designed to lure users into clicking malicious links, likely for phishing or malware distribution, under the guise of providing content related to 'Mortal Kombat Armageddon ROM'. No scripts were extracted from this sample.

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.cc/wix?keyword=mortal+kombat+armageddon+rom
    • https://cdn.shopify.com/s/files/1/0427/4978/8327/files/mathematical_logic_problems.pdf
    • https://cdn.shopify.com/s/files/1/0431/7098/8188/files/29949239266.pdf
    • https://cdn.shopify.com/s/files/1/0437/6153/3085/files/aha_guidelines_thoracic_aortic_aneurysm.pdf
    • https://cdn.shopify.com/s/files/1/0430/1671/6437/files/goxoropamulimofa.pdf
    • https://cdn.shopify.com/s/files/1/0431/1583/9645/files/counterparty_credit_risk_brigo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7049/6672/files/76524689131.pdf
    • https://cdn.shopify.com/s/files/1/0434/5928/1061/files/mazinerokiwetajimifo.pdf
    • https://cdn.shopify.com/s/files/1/0438/5262/8118/files/eagles_philly_special_illegal_formation.pdf
    • https://cdn.shopify.com/s/files/1/0435/7577/1304/files/46182820951.pdf
    • https://cdn.shopify.com/s/files/1/0431/4732/9702/files/pathfinder_bestiary_2_download_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/4424/9499/files/fobakikipusa.pdf
    • https://static.usrfiles.com/ugd/b8c837_130435c65c994bbf816c4a5175fcb2f2.pdf
    • https://static.usrfiles.com/ugd/b8c837_3a0e5c92cab94dbdab4a6c36a4127354.pdf
    • https://static.usrfiles.com/ugd/97368a_95b47e01a56e48e386a4ced3e9edee91.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_off00004625.bin
30320e00c4c94eb96a3aaded1f50c12164b4e8e417bf0d1c960dcc2a96dffc63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4625 5176 bytes
font_01_sfnt_off000057ae.bin
0cbc9f813c5b38e5605902638ebe7e9bc77f9e3cb73db46631ebb40cdef9d5fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57AE 9624 bytes

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