Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7bf3891ef84603d…

MALICIOUS

PDF

41.8 KB Created: 2020-08-18 15:05:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 496e1b04e83f55e912ee58cfb19901ad SHA-1: 263bd62999de20f1d8c0c65f62d5c4535b3c8abe SHA-256: a7bf3891ef84603d10c004f9d4ff3217b00ab9ab8c183cebed7e682f6bc807ef
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary malicious link is https://ttraff.com/pify?keyword=dragon+quest+builders+prima+guide+pdf, which likely leads to a malicious payload. The document body, though heavily obfuscated, contains references to game guides, suggesting a lure to entice users to click the malicious links.

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=dragon+quest+builders+prima+guide+pdf
    • http://files.q3tennis.net/uploads/1/3/2/6/132682210/e6a476.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8178/files/15588453795.pdf
    • https://cdn.shopify.com/s/files/1/0437/3259/8938/files/cognitive_bias_codex.pdf
    • https://cdn.shopify.com/s/files/1/0437/4292/0869/files/57342211286.pdf
    • https://cdn.shopify.com/s/files/1/0431/0990/8637/files/29199244519.pdf
    • https://cdn.shopify.com/s/files/1/0431/1348/0354/files/lawotalibisowuves.pdf
    • https://cdn.shopify.com/s/files/1/0454/3050/5628/files/87779348171.pdf
    • https://cdn.shopify.com/s/files/1/0435/4228/2399/files/jijaxafolakagus.pdf
    • https://cdn.shopify.com/s/files/1/0437/1061/1607/files/73802768951.pdf
    • https://cdn.shopify.com/s/files/1/0428/4094/8903/files/printable_loose_leaf_paper.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/payday_2_crack.pdf
    • https://cdn.shopify.com/s/files/1/0440/6640/6550/files/burkes_outlet_application.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000057d8.bin
d767f09b615f648d1c72f04a4ad3feb8656a3384f6594335e1bf368c1154a5c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57D8 5508 bytes
font_01_sfnt_off00006a64.bin
0eb231f901c97836dcc750b3adca528a50ae211cbbe399170789cf87c70c20e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A64 10028 bytes
font_02_sfnt_off00008c60.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C60 4324 bytes

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