Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3be485364039b07…

MALICIOUS

PDF

46.7 KB Created: 2020-08-15 04:02:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a0fe68e0c718024d2a13dbd506de9e67 SHA-1: 68265a1351d636f3c3a1b8c8c946094aa9f3b760 SHA-256: f3be485364039b074f6d9d02c3f95ca73cdfbde2190056cb981acf2a5edad0a6
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The primary malicious URL identified is ttraff.com, which is used to redirect to other locations. The document body contains garbled text but also includes the same URLs, suggesting an attempt to disguise the malicious nature of the links. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=lymphatic+circulation+pdf
    • http://files.sfkart.com/uploads/1/3/2/6/132681823/natapodewejira_sodoravow.pdf
    • http://files.falconeerkennels.com/uploads/1/3/2/7/132712154/gunifibosaf.pdf
    • http://files.ctcnevada.net/uploads/1/3/1/6/131607565/malaz_dinetof.pdf
    • http://files.eartharkbotswana.com/uploads/1/3/0/7/130740069/pumibeligutupuf-vefemaxag-fogedipesa.pdf
    • http://pavutato.thebarkinglotri.com/uploads/1/3/1/4/131454065/7572e96e3088dcd.pdf
    • https://cdn.shopify.com/s/files/1/0432/4907/4336/files/puwudofove.pdf
    • https://cdn.shopify.com/s/files/1/0437/5206/3125/files/tp-_link_archer_c7_dd_wrt.pdf
    • https://cdn.shopify.com/s/files/1/0434/0652/4566/files/jeopardy_game_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0451/8277/9541/files/breath_of_the_wild_water_guides_shrine.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/duguduzufubodesukidibupo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3316/5986/files/sidamogezoxuv.pdf
    • https://cdn.shopify.com/s/files/1/0428/1411/1903/files/77917547233.pdf
    • https://cdn.shopify.com/s/files/1/0429/6074/8695/files/liduropoliferiwexijaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/4628/1121/files/zetekobaki.pdf
    • https://cdn.shopify.com/s/files/1/0429/5386/7427/files/janekadufiloxafuka.pdf
    • https://cdn.shopify.com/s/files/1/0431/2236/0469/files/rogijojupisakitejafeva.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_off00006d21.bin
551589b1af322ab2eeaa2cf4ff080b7a080e2cc431c8341371d309c437128e6b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D21 5024 bytes
font_01_sfnt_off00007dff.bin
66877effa25393d4c47e73908157ec6ceb1c83ecb7d71370cd685b4e348ac6f0
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DFF 9760 bytes
font_02_sfnt_off00009f5c.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F5C 4324 bytes