Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c83422cb9256ca7…

MALICIOUS

PDF

45.1 KB Created: 2020-07-29 23:14:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d407129931b301a83cc0447167908da SHA-1: 7f7da7c81f4148a9a927d79ef1894695e4b3352d SHA-256: 8c83422cb9256ca7f56777a5e363cab1c7e152c170ed6ee814e1885fa9aab516
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in Systems T1059.001 PowerShell

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One of the primary links points to a known malicious redirector, ttraff.com, which is highly suspicious. The heuristic firings confirm the presence of a malicious redirector link and a large link farm, indicating a deceptive content strategy.

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.com/pify?keyword=portuguese+spanish+dictionary+pdf
    • http://files.airbrushartstudio.com/uploads/1/3/2/7/132712057/baduf-denonalejubejur-binawofetawu.pdf
    • http://files.thepromiselandcamp.com/uploads/1/3/0/8/130874102/272a00449bf6.pdf
    • http://files.f3s.org/uploads/1/3/1/0/131070529/boluvosanirixebiba.pdf
    • http://files.robertjamesallison.com/uploads/1/3/1/4/131437982/reduzijejap-lenasezolarijit-defoje-roriruge.pdf
    • http://files.shizokukaratedo.com/uploads/1/3/1/6/131606984/jutojefovusisivopep.pdf
    • https://cdn.shopify.com/s/files/1/0433/4141/4555/files/jeririxituditinakozugekim.pdf
    • https://cdn.shopify.com/s/files/1/0428/0342/9535/files/bajuxiwenotedatam.pdf
    • https://cdn.shopify.com/s/files/1/0431/0453/4692/files/xinuf.pdf
    • https://cdn.shopify.com/s/files/1/0429/3296/1443/files/41769162109.pdf
    • https://cdn.shopify.com/s/files/1/0437/9013/9549/files/2766958588.pdf
    • https://cdn.shopify.com/s/files/1/0430/9411/4453/files/57221231617.pdf
    • https://cdn.shopify.com/s/files/1/0431/0014/3777/files/gomegasosejopezanegifudan.pdf
    • https://cdn.shopify.com/s/files/1/0438/9899/4856/files/30320198270.pdf
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/ruvedatusu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5567/6568/files/58125153575.pdf
    • https://cdn.shopify.com/s/files/1/0431/5797/9304/files/sojenenibavipozod.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_off0000734b.bin
ec1bee93f4aba235eb4e1da991468d9cf81e2ccfa9791a2aabf2ceb63e1219d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x734B 5368 bytes
font_01_sfnt_off0000858e.bin
529f1b0eeeeeff6887f5f80cc9d914e26a92c4d7840f0aa75d728999200e2ed6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x858E 9896 bytes

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