Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e2b9040e0ff8a03…

MALICIOUS

PDF

41.2 KB Created: 2020-08-15 02:41:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0072604aa14f3c1e4bcf599aefbdf524 SHA-1: af1ee842626cc7aaa2930b6f88d161ae5bc4e59d SHA-256: 3e2b9040e0ff8a035662ab2d75baf3b90f52c08cdb1e8ab59dfee3ed11f13d6f
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, also contains this URL and numerous other PDF links, many hosted on cdn.shopify.com, suggesting a link farm or redirection strategy. The primary intent appears to be directing the user to the malicious 'ttraff.ru' domain, likely as part of a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=english+nursery+rhymes+free++videos
    • http://files.dopeceiling.com/uploads/1/3/1/8/131871569/6799354.pdf
    • http://pepitez.sportslabintranet.com/uploads/1/3/2/3/132303382/suwuzemuburoneweg.pdf
    • http://files.mindfulmomentsinedu.com/uploads/1/3/0/7/130776728/55b799e6158e.pdf
    • http://xitudonus.thorssenquarterhorses.com/uploads/1/3/0/8/130813848/dopibosizo.pdf
    • http://files.tombuckland.net/uploads/1/3/0/9/130969965/zumitotita.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kijajakunij.pdf
    • https://cdn.shopify.com/s/files/1/0430/8716/7637/files/blank_clock_face.pdf
    • https://cdn.shopify.com/s/files/1/0434/5298/9601/files/tabawefenadinu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/42632515291.pdf
    • https://cdn.shopify.com/s/files/1/0431/5512/8477/files/vobolizamoberegunure.pdf
    • https://cdn.shopify.com/s/files/1/0437/5294/7863/files/zijuxotipe.pdf
    • https://cdn.shopify.com/s/files/1/0437/5884/6109/files/95677412840.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/62307445800.pdf
    • https://cdn.shopify.com/s/files/1/0436/4750/0448/files/miwamemowawijedewonedal.pdf
    • https://cdn.shopify.com/s/files/1/0432/2040/2337/files/33337711215.pdf
    • https://cdn.shopify.com/s/files/1/0431/8242/4215/files/25525329597.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_off0000637d.bin
26359aaf1103a8825b50278d63bb279e9d0de0b948d8a45287de0235dca8e867		 pdf-font-stream PDF embedded font (sfnt) at offset 0x637D 5232 bytes
font_01_sfnt_off0000752c.bin
36a4437857ed0816a1715df4cddff03884c64b083fde0c20453f8813ade87f01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x752C 10128 bytes

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