Malicious PDF — malware analysis report

Static analysis result for SHA-256 3af2d87560c41e07…

MALICIOUS

PDF

45.0 KB Created: 2020-07-31 04:42:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95d686f3599eb9833d674cf03419fde2 SHA-1: 28bc80f7182b4ce38e15316f29c65d271fa7bdc7 SHA-256: 3af2d87560c41e07558de65911bd1255d4cba54f5c06dc89c29f042205dea4f5
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, characteristic of a link farm designed to manipulate search engine results or distribute malicious content. One of the primary links directs to a known malicious redirector, ttraff.com, which likely leads to further malicious sites. The document body is heavily obfuscated and contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create SEO spam PDFs.

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=bending+moment+and+shear+force+diagram+for+cantilever+beam+pdf
    • http://files.burntofferingsbbq.com/uploads/1/3/1/8/131871554/5b2c7092.pdf
    • http://files.thelutherie.com/uploads/1/3/1/4/131483336/devujatugebe.pdf
    • http://files.hprugs.com/uploads/1/3/0/7/130776602/6097517.pdf
    • https://cdn.shopify.c
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/34732800637.pdf
    • https://cdn.shopify.com/s/files/1/0430/7314/2935/files/mubiti.pdf
    • https://cdn.shopify.com/s/files/1/0434/5485/7369/files/58350178494.pdf
    • https://cdn.shopify.com/s/files/1/0428/1407/9143/files/votat.pdf
    • https://cdn.shopify.com/s/files/1/0437/2430/8630/files/zuxutewifawojafilomup.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tadigepulimo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32150460784.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fovurasavelibegesixaga.pdf
    • https://cdn.shopify.com/s/files/1/0432/8862/5316/files/55549845021.pdf
    • https://cdn.shopify.com/s/files/1/0436/0231/3373/files/86489688888.pdf
    • https://cdn.shopify.com/s/files/1/0433/5819/1768/files/kejajakomipomafoniku.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_off000071a6.bin
00207d42637ffe553706e1e851a61a13df8b262a9a355f6e3f7c012e11312614		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71A6 5604 bytes
font_01_sfnt_off00008484.bin
7b6748b81844b409beaae42187e48fc3b880f15242dc9a1def756f65e26dcf0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8484 9988 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.