Malicious PDF — malware analysis report

Static analysis result for SHA-256 32a8f50bd0e26175…

MALICIOUS

PDF

67.7 KB Created: 2020-08-23 13:12:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9fb13c6490d2f02680bfa9fb4ebf2f94 SHA-1: d774eaa87bf52336714f390dbca21cbfdfe8a767 SHA-256: 32a8f50bd0e26175c38c3b11f4cf0247ef1ef5d5e685413e84a00f9726a4bd13
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link that redirects to a known malicious URL, disguised as an organizational announcement template. This indicates a phishing or social engineering attempt to lure the user to malicious infrastructure. The PDF also contains a large number of external links, suggesting it is part of a link farm designed to manipulate search engine results or distribute malware. The ML classifier strongly flagged this PDF as malicious.

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=organizational+announcement+template
    • http://duzanofu.casadegrode.com/uploads/1/3/0/7/130776783/linox.pdf
    • https://cdn.shopify.com/s/files/1/0433/4413/4294/files/59739163972.pdf
    • https://cdn.shopify.com/s/files/1/0439/0889/0792/files/jazozopanulomu.pdf
    • https://cdn.shopify.com/s/files/1/0437/2286/6839/files/16920224775.pdf
    • https://cdn.shopify.com/s/files/1/0436/1335/6189/files/free_printable_october_2015_calendars.pdf
    • https://cdn.shopify.com/s/files/1/0432/7286/3899/files/17583785252.pdf
    • https://cdn.shopify.com/s/files/1/0437/2476/7400/files/geometrical_interpretation_of_integration.pdf
    • https://cdn.shopify.com/s/files/1/0435/7367/4142/files/nojaputugogusalogoxoni.pdf
    • https://cdn.shopify.com/s/files/1/0427/7541/2902/files/zajenetu.pdf
    • https://cdn.shopify.com/s/files/1/0437/9066/3832/files/daberafixunavak.pdf
    • https://cdn.shopify.com/s/files/1/0434/8208/7576/files/the_lesser_banishing_ritual_of_the_pentagram.pdf
    • https://cdn.shopify.com/s/files/1/0428/9177/2063/files/46757375468.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_off0000ccb1.bin
4413716c81e0bb0a721b5886a444554d3ee68a4ac6cb7dac279ddf99396969e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCCB1 5152 bytes
font_01_sfnt_off0000de28.bin
b0bb4575f63e597ce048dc87ed9901068d232f277bfedffd3118dcbc6895b76d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE28 10484 bytes

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