Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad3031d45f386911…

MALICIOUS

PDF

51.0 KB Created: 2020-08-15 10:42:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac98c6faf4daac2df0858f7ce47e2a81 SHA-1: 09110eb8a1331c21de88cd4ea70c2d39ce5e39cb SHA-256: ad3031d45f386911316955e47ed93c7e42beb7d4aa140bee50a61547cc86126a
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.ru/wb?keyword=ensayo%20sobre%20el%20aprendizaje%20significativo%20pdf, which is likely used to redirect users to further malicious content. The document body, though heavily obfuscated, contains references to this URL and other Shopify-hosted PDFs, suggesting a link farm or SEO poisoning tactic to lure victims.

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/wb?keyword=ensayo%20sobre%20el%20aprendizaje%20significativo%20pdf
    • http://files.elisafriedlander.com/uploads/1/3/0/7/130775970/3087793.pdf
    • http://files.chrisminamyer.com/uploads/1/3/2/7/132740553/7035012.pdf
    • http://files.smoochespooches.co.uk/uploads/1/3/2/7/132741334/1723023.pdf
    • http://files.partiesnpresents.com/uploads/1/3/1/6/131606552/a2bea4d232.pdf
    • https://cdn.shopify.com/s/files/1/0434/2117/1873/files/dixegifavujokuvis.pdf
    • https://cdn.shopify.com/s/files/1/0430/3529/5905/files/67400778737.pdf
    • https://cdn.shopify.com/s/files/1/0434/3146/1016/files/round_rock_weather_radar.pdf
    • https://cdn.shopify.com/s/files/1/0430/4375/0039/files/back_pain_exercises_pictures.pdf
    • https://cdn.shopify.com/s/files/1/0437/7044/5982/files/bsf_form_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/5180/9957/files/37495053905.pdf
    • https://cdn.shopify.com/s/files/1/0434/6236/1245/files/drawn_together_uncesored.pdf
    • https://cdn.shopify.com/s/files/1/0433/7251/1386/files/8115760795.pdf
    • https://cdn.shopify.com/s/files/1/0429/7188/9815/files/bihar_hindustan_news.pdf
    • https://cdn.shopify.com/s/files/1/0432/5539/8563/files/paredipinimozavuzudatoxi.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_off000086c4.bin
f22866debe7fef7fef40928583edbb858e6357aa4e39ee68b04174e6aa6b03c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86C4 5708 bytes
font_01_sfnt_off00009a52.bin
65421da92a6b2c6195d6dba2c39501a716451afa4fb71798b651da12074b3777		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A52 10780 bytes

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