Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8fdb2472ea73aed…

MALICIOUS

PDF

40.7 KB Created: 2020-08-22 17:49:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b62f24f6fbf32706ffb80e596fa9e131 SHA-1: 1bbe8d7f4c1ed803c14928bb59518cbf768209a2 SHA-256: e8fdb2472ea73aedc79da0fb20f02d467b59a8585e3c6475822f911744fd8b5d
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing: Spearphishing Attachment T1204.002 Malicious File: Malicious Link

The PDF file was flagged as malicious by an ML classifier and contains a critical heuristic indicating it's a redirector link to a known malicious domain. It also exhibits characteristics of a PDF SEO link farm, with numerous embedded links pointing to Shopify-hosted PDFs. The primary malicious URL is ttraff.com, which is likely used for further redirection or to host 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.com/pify?keyword=full+hd+couple+love+wallpapers+free
    • http://panebufa.jacquelinestanford.com/uploads/1/3/1/1/131164424/povenaropuwiviz.pdf
    • http://zokokowit.zenwich.us/uploads/1/3/0/9/130969754/tepipuliredulusab.pdf
    • http://files.rebeccalaplaca.com/uploads/1/3/1/4/131452823/tebidezuki.pdf
    • https://cdn.shopify.com/s/files/1/0431/9232/0161/files/vodilugotetawuj.pdf
    • https://cdn.shopify.com/s/files/1/0434/5298/9607/files/zalurexibobobijevifonekul.pdf
    • https://cdn.shopify.com/s/files/1/0438/0118/2370/files/355650635.pdf
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/acknowledgement_for_college_project.pdf
    • https://cdn.shopify.com/s/files/1/0435/6158/2755/files/xasuguxu.pdf
    • https://cdn.shopify.com/s/files/1/0433/6680/9765/files/21467803815.pdf
    • https://cdn.shopify.com/s/files/1/0435/5381/6728/files/wutokekusalizewodalulaja.pdf
    • https://cdn.shopify.com/s/files/1/0428/4642/1158/files/20140473483.pdf
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/tapixugubagoride.pdf
    • https://cdn.shopify.com/s/files/1/0428/8430/0959/files/46889077747.pdf
    • https://cdn.shopify.com/s/files/1/0430/6790/0058/files/873507458.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_off0000610f.bin
8869475b0a6689e5b8711df9451ff8695b54cedd76051bcede49e59178bd04a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x610F 5348 bytes
font_01_sfnt_off0000734a.bin
a180ebf0e162c77184b463af72a1de3fd6aab8ece46463b1edce8d03209fdd0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x734A 10124 bytes

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