Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bfface65275bcae…

MALICIOUS

PDF

40.6 KB Created: 2020-08-27 16:46:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be0095a4890d6def635e46994c8e1eb6 SHA-1: b77cd9c59d4e4c74a3dd92d9773e6d180d844cd7 SHA-256: 9bfface65275bcae7f9d7ace964d0ca2205706880603e38f25c4085ad2d0c4fd
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

This PDF document contains a large number of embedded links, masquerading as "pallet bench plans pdf", which point to a malicious redirector. The primary malicious URL identified is https://ttraff.ru/pify?keyword=pallet+bench+plans+pdf. The document's structure and the presence of numerous external links suggest a link farm or redirection tactic to distribute further malicious content.

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=pallet+bench+plans+pdf
    • http://files.richardhstephens.com/uploads/1/3/1/0/131071157/731797bd05.pdf
    • http://pigutivez.jillfreidberg.com/uploads/1/3/0/9/130969873/wujulat_natolifal_botasu.pdf
    • http://files.wemachinebilletparts.com/uploads/1/3/0/7/130738646/vuwanonulusetibosaz.pdf
    • http://files.evergreenchristianhs.org/uploads/1/3/1/4/131437425/5147760.pdf
    • http://womuj.joseeliasgallegos.com/uploads/1/3/1/3/131379578/3cfa2c0c613.pdf
    • https://cdn.shopify.com/s/files/1/0432/3006/8894/files/zusogoronasum.pdf
    • https://cdn.shopify.com/s/files/1/0430/7753/3856/files/pinivewal.pdf
    • https://cdn.shopify.com/s/files/1/0429/3787/6639/files/dreadout_full_movie_hd.pdf
    • https://cdn.shopify.com/s/files/1/0429/9964/4314/files/58861138830.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kurejala.pdf
    • https://cdn.shopify.com/s/files/1/0429/4216/9244/files/rivupivorasadikamobarex.pdf
    • https://cdn.shopify.com/s/files/1/0429/8516/0857/files/doduzorajoruvavakaj.pdf
    • https://cdn.shopify.com/s/files/1/0435/9097/5647/files/cakewalk_sonar_producer_8._5.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_off0000622e.bin
1eac2c03daf4f7c77bbbe5793fcc74de59ab466e088ae95e5f0803417a390a79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x622E 5288 bytes
font_01_sfnt_off0000741a.bin
0543d68885390dbe63befbdbe1ec1c826de4e42f9ca1812fdc4446075da0fca3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x741A 9756 bytes

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