Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3d559f6980482b5…

MALICIOUS

PDF

44.2 KB Created: 2020-09-09 18:24:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 914b540963ceb63d2af5e5ca2579fddc SHA-1: a99b9b933d20a8fe21d52ee95ad5ceba77ed1c47 SHA-256: d3d559f6980482b5d9ad870df7729215db400011e7c29ba3fd0f4e2fe7ee9a30
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.link/pify?keyword=acute+asthma+treatment+guidelines+2018', points to a known malicious redirector. The document body, though partially corrupted, also contains this URL and other PDF links, suggesting a social engineering attempt to direct users to malicious infrastructure. No scripts were extracted, limiting the analysis of direct payload execution.

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.link/pify?keyword=acute+asthma+treatment+guidelines+2018
    • http://files.golfmanorsynagogue.org/uploads/1/3/1/4/131407977/7be016d7c.pdf
    • http://files.brandikphoto.com/uploads/1/3/2/7/132741109/silajexuga.pdf
    • http://jodup.newsomecasting.co.uk/uploads/1/3/1/4/131438437/jerufevajufikonajufo.pdf
    • http://nidenogeb.clearlightastrology.com/uploads/1/3/0/8/130874629/nunalow-babekimelufin-javerad-xumefelikebedof.pdf
    • http://files.rsvpvolunteercaregivers.org/uploads/1/3/2/6/132681824/navate.pdf
    • http://files.shop-harrisandwillow.com/uploads/1/3/2/6/132681836/7724640.pdf
    • http://files.crepusculumchoir.com/uploads/1/3/0/8/130814192/masanejerawuz.pdf
    • http://files.riverplus-multimedia.com/uploads/1/3/1/6/131606687/4566625.pdf
    • https://static.usrfiles.com/ugd/ca32a8_058d009b3cf04f42925aec4ec013f83f.pdf
    • https://static.usrfiles.com/ugd/b8c837_88d61fd07bf1437c88f4d5ed8bd4f251.pdf
    • https://cdn.shopify.com/s/files/1/0447/9831/2609/files/54206148633.pdf
    • https://cdn.shopify.com/s/files/1/0433/2571/8678/files/melaxukamufinuxiluva.pdf
    • https://cdn.shopify.com/s/files/1/0438/6573/5328/files/89593131584.pdf
    • https://cdn.shopify.com/s/files/1/0446/6386/5497/files/pajuzevituxufewesedawar.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_off00006ed3.bin
447808d411a9a72c8a1606399778b34cb9e830e60f08179c9c6cd9a1d3f8376d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED3 5860 bytes
font_01_sfnt_off0000829b.bin
42316dc0f83e10f39903cfa6ef4032090c17f16670599c591e0ba3d0b6103614		 pdf-font-stream PDF embedded font (sfnt) at offset 0x829B 9704 bytes

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