Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a8a3214b40882a7…

MALICIOUS

PDF

38.7 KB Created: 2020-08-23 06:49:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9505f2c59f83d09ac8ebcfda3ce462b7 SHA-1: e6ab704d357f724f929846ebf7f8b3049cb0f2c6 SHA-256: 2a8a3214b40882a7af89a3431bc114c00737e97b0e59c1c90af4abdd0537ef0a
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is further disguised with a keyword related to 'printable dice template'. The document body, though heavily obfuscated, contains this URL, indicating the primary intent is to lure the user into clicking the malicious link. The presence of many Shopify links suggests an attempt to blend malicious links with seemingly benign ones.

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=printable+dice+template+with+numbers
    • http://mofob.tmcphila.org/uploads/1/3/1/0/131071164/petugufo-falapujazitex-luramitu.pdf
    • http://files.harlemhype.com/uploads/1/3/1/0/131070498/ae64c5c305a.pdf
    • http://dupojir.jmossart.com/uploads/1/3/2/8/132814930/dusumuzotataj_jebevide.pdf
    • https://cdn.shopify.com/s/files/1/0431/3920/3221/files/31564841631.pdf
    • https://cdn.shopify.com/s/files/1/0437/9561/1805/files/journey_of_a_water_droplet_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/4834/5500/files/30789706404.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/dinupegegirarelalep.pdf
    • https://cdn.shopify.com/s/files/1/0431/1891/9837/files/math_pre_calculus_12_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0430/2438/4154/files/swedenborg_books.pdf
    • https://cdn.shopify.com/s/files/1/0432/1660/1249/files/20420797727.pdf
    • https://cdn.shopify.com/s/files/1/0428/1230/9670/files/10763618246.pdf
    • https://cdn.shopify.com/s/files/1/0431/6777/6919/files/66650103955.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_off000058a5.bin
e8e3db1c251ff48ef8dc8740fa4cae78db302ad93b2fe3fd48b705abe7386f01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58A5 5544 bytes
font_01_sfnt_off00006b4f.bin
7042258c74d9b3d6726704b01056cf8a36ad1a29c1adf596d4405d5bfc919a74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B4F 10172 bytes

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