Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0b6fd31edaffa34…

MALICIOUS

PDF

51.0 KB Created: 2020-08-08 22:42:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4990a4587778a31ae2840389dd9af443 SHA-1: 6128fda16283c8dbb96e48edf067e53ae681429c SHA-256: d0b6fd31edaffa3455211d71c2a20390f5848f88f11ab9788a2d779c7c2e30ad
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 external resources. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=microbiology+of+biogas+production+pdf'. The document body also contains numerous links, including this malicious one and others that appear to be part of a link farm designed to manipulate search engine results. The primary goal appears to be directing users to potentially harmful websites.

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.ru/pify?keyword=microbiology+of+biogas+production+pdf
    • http://lixasajep.riscooper.com/uploads/1/3/2/7/132712207/dekawubaduwevodune.pdf
    • http://ninikej.elbeephotography.com/uploads/1/3/1/8/131856333/gifigemomojumub.pdf
    • http://files.yomommasapronstrings.com/uploads/1/3/0/8/130814110/zitorol_bipolus.pdf
    • http://files.hubcaphobbies.com/uploads/1/3/1/3/131398374/simutigesen.pdf
    • https://cdn.shopify.com/s/files/1/0428/8030/3263/files/naruto_shippuden_english_dub_episode_336.pdf
    • https://cdn.shopify.com/s/files/1/0428/4953/4111/files/gufulozafupifujeser.pdf
    • https://cdn.shopify.com/s/files/1/0428/7427/3948/files/24828128558.pdf
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/cub_cadet_125.pdf
    • https://cdn.shopify.com/s/files/1/0438/2490/6397/files/29135701870.pdf
    • https://cdn.shopify.com/s/files/1/0432/3885/0724/files/60364946161.pdf
    • https://cdn.shopify.com/s/files/1/0433/7329/7822/files/20872864774.pdf
    • https://cdn.shopify.com/s/files/1/0432/9639/1323/files/nopekurikiji.pdf
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/bilopebare.pdf
    • https://cdn.shopify.com/s/files/1/0430/6278/8245/files/mutonubez.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_off00008969.bin
dd764438b75e2c1484c47fe4d35e3f623f30d94a54966d7a4422f86660cc4ce4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8969 5568 bytes
font_01_sfnt_off00009c7a.bin
5bc25fe7c0ed3dcdb5a96a5a2f81b894557645c1e6ce4d518e847fe350048469		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C7A 10048 bytes

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