Malicious PDF — malware analysis report

Static analysis result for SHA-256 efe0bb289c7cb658…

MALICIOUS

PDF

49.7 KB Created: 2020-08-02 21:28:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 867577c707427c3c3e97381965f47e94 SHA-1: eda1d4c87c026468d66191e9a10cc416e2af27c9 SHA-256: efe0bb289c7cb658205aef332be21fe1dfe06998dd72accc166ab253846746df
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 PDF files hosted on various domains. One of the primary links, https://ttraff.ru/pify?keyword=what+is+origin+in+git, is identified as a malicious redirector. This suggests the document's purpose is to act as a link farm, potentially leading users to malicious sites or further stages of an attack. No scripts were extracted, and the document body is heavily obfuscated.

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=what+is+origin+in+git
    • http://files.hansmerklein.com/uploads/1/3/1/4/131407423/loladezunifopiroke.pdf
    • http://files.capital-homecare.com/uploads/1/3/1/4/131407112/c43bb5a001d1339.pdf
    • http://files.franciscoriosanderson.com/uploads/1/3/2/6/132681392/ecab6040a6.pdf
    • https://cdn.shopify.com/s/files/1/0437/4695/1319/files/venagiwinolugepe.pdf
    • https://cdn.shopify.com/s/files/1/0429/6956/3290/files/ludefexirotoriri.pdf
    • https://cdn.shopify.com/s/files/1/0432/1283/2931/files/pisig.pdf
    • https://cdn.shopify.com/s/files/1/0436/9724/2280/files/23620657586.pdf
    • https://cdn.shopify.com/s/files/1/0434/4836/9309/files/rizemuzalajixosojinupobo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8904/3358/files/kidutemunikunotonusigo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81274949660.pdf
    • https://cdn.shopify.com/s/files/1/0434/1517/5335/files/93360741450.pdf
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/36765618845.pdf
    • https://cdn.shopify.com/s/files/1/0431/7937/6798/files/natoziwewot.pdf
    • https://cdn.shopify.com/s/files/1/0429/1615/1455/files/luzaba.pdf
    • https://cdn.shopify.com/s/files/1/0433/7188/8803/files/98675523903.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_off00006d15.bin
32d2003e987b75e5a6371576b3a8261762fd3633a570cf843b68ca4dd41adab6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D15 6896 bytes
font_01_sfnt_off0000849d.bin
2affe8f9c5731e480d499205d5a5267d8ab04719a11f69c08769a2474bc70af9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x849D 4928 bytes
font_02_sfnt_off00009566.bin
e128f653611fd94f205e877e966dbeaa8aee76db4b0bdcf1d0c34a761e7eb4bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9566 10676 bytes

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