Malicious PDF — malware analysis report

Static analysis result for SHA-256 20cd919299cafa00…

MALICIOUS

PDF

43.4 KB Created: 2020-08-16 12:38:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5779e2fcc4d6061831b8dfc420254904 SHA-1: f3159f12b0ba8773ce732319c1fbbb05e26c7b5d SHA-256: 20cd919299cafa00ccc1daaec0fcf8f2a8110f3fa6c9f5070e3fda83ab4fa7cd
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, many of which point to a redirector service. The document body, though heavily obfuscated, contains text related to a video game achievement guide and a URL that leads to a malicious redirector. This suggests a social engineering lure to drive traffic to malicious infrastructure.

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=alan+wake+achievement+guide
    • http://fejujivek.brandtmarineinc.com/uploads/1/3/0/7/130739615/4248737.pdf
    • http://xoruwi.allwyncourt.com/uploads/1/3/1/3/131380600/ec35271b6a.pdf
    • http://rejizomo.watsonauctions.net/uploads/1/3/0/7/130738847/81884.pdf
    • https://cdn.shopify.com/s/files/1/0431/8534/0580/files/touring_bicycle_buyer_s_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/6717/1223/files/fobinaxibesogaxuri.pdf
    • https://cdn.shopify.com/s/files/1/0431/1334/9273/files/nutrition_guidelines_pregnancy_australia.pdf
    • https://cdn.shopify.com/s/files/1/0428/4101/4438/files/jezur.pdf
    • https://cdn.shopify.com/s/files/1/0433/2548/9305/files/copernican_revolution_kuhn.pdf
    • https://cdn.shopify.com/s/files/1/0430/3077/3913/files/silowosemujafisib.pdf
    • https://cdn.shopify.com/s/files/1/0451/6829/6090/files/degree_of_data_abstraction_in_dbms.pdf
    • https://cdn.shopify.com/s/files/1/0429/3646/7623/files/taselimabaluwagovumot.pdf
    • https://cdn.shopify.com/s/files/1/0433/8168/6437/files/buranefime.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_off00006cf2.bin
6110210d66fd256a2aeca0fb3a9b6e5cdadbfdc3d623d848642095f331afb556		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CF2 5284 bytes
font_01_sfnt_off00007ed8.bin
8488ee9d38742084c68499c6d175e9f95268fb6ee9d36ee51bbfca8c4be63a80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ED8 10120 bytes

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