Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3ec1deb509855a7…

MALICIOUS

PDF

49.1 KB Created: 2020-08-10 23:47:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5202ce1636267a07b0c61e79a137bf17 SHA-1: 180fe02f04ef89ce9971ce8f22ab83255561f8c1 SHA-256: c3ec1deb509855a7f4ff1694af759719f341b02408c9e9bde964919d169842ac
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The PDF also contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic, suggesting it is part of a link farm designed to attract traffic. The embedded URL in the document body, 'https://ttraff.ru/pify?keyword=metabolisme+protein+pada+unggas+pdf', is the primary indicator of malicious activity, likely serving as a redirector to further malicious content.

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=metabolisme+protein+pada+unggas+pdf
    • http://files.exploreproductivity.com/uploads/1/3/1/4/131438156/dde749d2.pdf
    • http://files.ammpurage.com/uploads/1/3/1/3/131379439/molaketokuzuno.pdf
    • http://files.ivotech.net/uploads/1/3/2/6/132683088/8417288.pdf
    • https://cdn.shopify.com/s/files/1/0435/6440/0798/files/tekokuremitefe.pdf
    • https://cdn.shopify.com/s/files/1/0440/5483/9461/files/arithmetic_and_geometric_sequence_test.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tijubijevuvikupox.pdf
    • https://cdn.shopify.com/s/files/1/0434/7668/0869/files/jigiduzavafuxodinedisumum.pdf
    • https://cdn.shopify.com/s/files/1/0438/0947/2669/files/82070266655.pdf
    • https://cdn.shopify.com/s/files/1/0428/6867/0620/files/woxunixogomaze.pdf
    • https://cdn.shopify.com/s/files/1/0433/2303/1720/files/fitaresisazefolela.pdf
    • https://cdn.shopify.com/s/files/1/0431/1236/6231/files/lunuzoxuzasuli.pdf
    • https://cdn.shopify.com/s/files/1/0435/2511/1972/files/gusevalurilugesikudi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8282/5371/files/11559364101.pdf
    • https://cdn.shopify.com/s/files/1/0432/2259/7796/files/similar_triangles_problems_with_answers.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_off000081ed.bin
9483f8bce642c78ffb9681ad1a68d47ef968f0255f21b0eab5927d47b3550063		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81ED 5508 bytes
font_01_sfnt_off0000948a.bin
ded1f84f5fff09fe0599c1523d304f0d8ec393eb3aa9967317fd45783d9381c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x948A 10240 bytes

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