Malicious PDF — malware analysis report

Static analysis result for SHA-256 06a0b864eedfd894…

MALICIOUS

PDF

34.7 KB Created: 2020-08-04 23:56:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da453aa449744a412531b2120c3aa2e5 SHA-1: 7fbdb96d9daff4ec386cbf87ca913f0cc82682a2 SHA-256: 06a0b864eedfd894af49cec198e465e94a24a21e5d6af897d3b24d635bf3cd30
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing indicating it links to known malicious redirector infrastructure, specifically `https://ttraff.ru/pify?keyword=strength+training+anatomy+3th+edition+pdf+download`. The document body also contains this URL and numerous other links to PDFs hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=strength+training+anatomy+3th+edition+pdf+download
    • http://files.coop-creations.com/uploads/1/3/2/8/132815054/vumunigikaz.pdf
    • http://files.herbkauderer.com/uploads/1/3/0/8/130874063/fibawabarezivi-tiwifoxitebonuw-sevob-netunuw.pdf
    • http://files.womeninscienceinscotland.com/uploads/1/3/0/7/130775046/edbc6352.pdf
    • http://files.carolynmackwood.com/uploads/1/3/1/4/131454034/2166125.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/0863/7602/files/2008_ford_escape_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/7461/7511/files/dixojowanodi.pdf
    • https://cdn.shopify.com/s/files/1/0432/4674/7803/files/5129227508.pdf
    • https://cdn.shopify.com/s/files/1/0433/5344/0414/files/pagijaganodapidagijozono.pdf
    • https://cdn.shopify.com/s/files/1/0429/8221/1733/files/vimufopoxoge.pdf
    • https://cdn.shopify.com/s/files/1/0428/2328/6940/files/nokedeseradagemuxamukuz.pdf
    • https://cdn.shopify.com/s/files/1/0434/6868/5464/files/80835501041.pdf
    • https://cdn.shopify.com/s/files/1/0429/9164/8929/files/penemawozizej.pdf
    • https://cdn.shopify.com/s/files/1/0439/2170/3067/files/womuwuguzitexixowa.pdf
    • https://cdn.shopify.com/s/files/1/0430/9060/8285/files/lokenugonudas.pdf
    • https://cdn.shopify.com/s/files/1/0428/2230/3911/files/luigis_mansion_rom.pdf
    • https://cdn.shopify.com/s/files/1/0431/0204/4316/files/gorusamib.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000488e.bin
6c6d3c1b74b66453fc89195671530fccc407c82cd96797057a07968d1c2d5d41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x488E 5740 bytes
font_01_sfnt_off00005c0c.bin
c8d4a513b68180d3721e3f049811f56223b25df2a366d7af685bb0b1a9f58963		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C0C 9848 bytes

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