Malicious PDF — malware analysis report

Static analysis result for SHA-256 f21c9b20ddc4724e…

MALICIOUS

PDF

44.1 KB Created: 2020-08-05 07:04:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b0acdfb84ec80266d31723b27cc56db SHA-1: ea606c55947090193fef73e4efcb41bd6b99a5c5 SHA-256: f21c9b20ddc4724efbfeedc6d101cf7d461ee831a3d24e9b87058eb7780a4e18
120 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 ttraff.com. The document body text and embedded links suggest a lure to download a CV PDF, which is likely a pretext to redirect the user to malicious content. The PDF also contains a link farm heuristic, indicating a large number of external links, many of which are hosted on cdn.shopify.com, but the primary malicious indicator is the ttraff.com redirector.

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/wb?keyword=good%20example%20of%20a%20cv%20pdf
    • http://files.voiceconsultingaustralia.com/uploads/1/3/1/4/131454549/c57d73.pdf
    • http://vizuxano.welcomeneighborftsmith.com/uploads/1/3/1/4/131482976/72158efe1f68433.pdf
    • http://files.kevinpollarddesign.com/uploads/1/3/1/3/131383478/fa3a82.pdf
    • https://cdn.shopify.com/s/files/1/0436/4432/1945/files/gondongan_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0429/8774/9525/files/24580783670.pdf
    • https://cdn.shopify.com/s/files/1/0431/4329/9232/files/rozovifabofoni.pdf
    • https://cdn.shopify.com/s/files/1/0435/0512/3493/files/28254660393.pdf
    • https://cdn.shopify.com/s/files/1/0432/7460/0598/files/lobem.pdf
    • https://cdn.shopify.com/s/files/1/0434/5069/5830/files/13154011230.pdf
    • https://cdn.shopify.com/s/files/1/0438/1959/7981/files/89523553735.pdf
    • https://cdn.shopify.com/s/files/1/0435/7586/9599/files/2007_lexus_rx_350_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7349/files/14251628762.pdf
    • https://cdn.shopify.com/s/files/1/0434/8664/2336/files/29954667100.pdf
    • https://cdn.shopify.com/s/files/1/0430/2100/9053/files/dososekilewuvi.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_off0000657f.bin
658c2d19f6c0539671134afb0df3afb70ec4f1ea2bd70bc083f5e6b971b0f319		 pdf-font-stream PDF embedded font (sfnt) at offset 0x657F 5184 bytes
font_01_sfnt_off0000772c.bin
c2bc65739f6ed372ffb162985bb149b2352e1fe25f20964d510667d5826451a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x772C 14580 bytes

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