Malicious PDF — malware analysis report

Static analysis result for SHA-256 47b4a9a3b334dd8c…

MALICIOUS

PDF

39.1 KB Created: 2020-08-18 13:40:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bcf5eb7ef37d16ac16a3788b768a845a SHA-1: fe7101c038aa78e35a029db79c8b1543ba3871c5 SHA-256: 47b4a9a3b334dd8c4ee7172022e005ea9669e1c73a2e916369ed0e365c4f9c7e
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The embedded document body contains the URL 'https://ttraff.ru/pify?keyword=emoji+faces+worksheet', which is a known malicious redirector, and numerous other PDF links, suggesting a phishing or malware distribution attempt.

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=emoji+faces+worksheet
    • http://wixugut.clinescorners.com/uploads/1/3/1/8/131871674/4285176.pdf
    • http://files.killforeden.com/uploads/1/3/1/4/131437513/numepuzakinolevok.pdf
    • http://jimukul.3islandsdesigns.com/uploads/1/3/2/7/132740978/kisof.pdf
    • http://panipe.potpieparadise.com/uploads/1/3/0/7/130775484/43dc9312.pdf
    • https://cdn.shopify.com/s/files/1/0429/0553/4620/files/72506655399.pdf
    • https://cdn.shopify.com/s/files/1/0440/6693/0840/files/31019797310.pdf
    • https://cdn.shopify.com/s/files/1/0433/8099/8298/files/job_application_form_sri_lanka.pdf
    • https://cdn.shopify.com/s/files/1/0429/9508/9561/files/cabin_crew_training_manual_dgca.pdf
    • https://cdn.shopify.com/s/files/1/0432/6978/3720/files/29756758549.pdf
    • https://cdn.shopify.com/s/files/1/0437/7945/7173/files/88232657660.pdf
    • https://cdn.shopify.com/s/files/1/0430/9552/3485/files/55090220051.pdf
    • https://cdn.shopify.com/s/files/1/0433/6356/5727/files/43670881031.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5682/files/36624171134.pdf
    • https://cdn.shopify.com/s/files/1/0436/0886/6974/files/psycho_cybernetics_summary.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_off00005a1e.bin
fb535f21b3a6b6f02e751926bf7bbea1efbda51e1fce1c358d4898035a72a1fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A1E 5280 bytes
font_01_sfnt_off00006c08.bin
033deeb322525fa471b2a902e2adf3db751b75a8bf027db46a91e6d48bb51ab4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C08 10572 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.