Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f6baf289f177cd3…

MALICIOUS

PDF

46.3 KB Created: 2020-08-25 08:43:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b3203eef951458502e954f3b828832f0 SHA-1: 86e4ea5155fdb41137997192d2dd2a80d4604f7e SHA-256: 9f6baf289f177cd3f121179e2a3008ea31a2cbbf1b69a4b0a4aee87bee8c9de0
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, indicative of a link farm or SEO manipulation. One of the embedded URLs, 'https://ttraff.ru/pify?keyword=africa+toto+choir+pdf', is identified as a malicious redirector. The document body contains garbled text but also includes the malicious URL and several other PDF links, reinforcing the observed attack pattern.

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=africa+toto+choir+pdf
    • http://files.gatheringsforgood.com/uploads/1/3/1/4/131453399/858315.pdf
    • http://files.montananazarene.org/uploads/1/3/1/4/131406592/dufurivize-xezebukep-winetotupawazew-bonuxajevobibax.pdf
    • http://files.burnthorizon.co.uk/uploads/1/3/2/7/132741339/jalijel_ditojifuru_tozigarimedo_lizeragazoduja.pdf
    • http://supexez.europeanmasterswl.com/uploads/1/3/2/6/132681862/2699431.pdf
    • http://jopiz.techtalkpd.com/uploads/1/3/1/6/131606490/sovimivonunu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1394/7041/files/maths_formulas_for_class_8_and_9.pdf
    • https://cdn.shopify.com/s/files/1/0430/6845/7113/files/8157928313.pdf
    • https://cdn.shopify.com/s/files/1/0428/3164/2780/files/rijimug.pdf
    • https://cdn.shopify.com/s/files/1/0435/5109/6993/files/6766683632.pdf
    • https://cdn.shopify.com/s/files/1/0434/2035/2677/files/nuvataxoxuj.pdf
    • https://cdn.shopify.com/s/files/1/0428/7240/6179/files/menijuleradozi.pdf
    • https://cdn.shopify.com/s/files/1/0433/6579/3942/files/multiplication_coloring_worksheets_grade_3.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/34707652888.pdf
    • https://cdn.shopify.com/s/files/1/0439/4385/4235/files/anime_drawing_software_for_pc_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/1663/4016/files/96792316942.pdf
    • https://cdn.shopify.com/s/files/1/0445/3348/1636/files/acet_model_test_papers.pdf
    • https://cdn.shopify.com/s/files/1/0432/2240/1185/files/jabawasixodemur.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_off00005fc1.bin
5725d827ca2f95ab9a059a73cc33d0cff055819fff967eb7b0b5784c60ccfe54
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC1 4584 bytes
font_01_sfnt_off00006f5b.bin
f86b2c980f5b38f44056bc5be2a4a8aa98e878b1e7721f7e33b4611c896dcb8b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F5B 14908 bytes
font_02_sfnt_off00009e51.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x9E51 4324 bytes