Malicious PDF — malware analysis report

Static analysis result for SHA-256 a603892befd15840…

MALICIOUS

PDF

46.1 KB Created: 2020-08-23 08:30:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd8487e52b5fbf108ec118764220de65 SHA-1: 360707239a5d2aa105fd5ce215c48b0848e2aceb SHA-256: a603892befd158403ea0f12970ecfca4ef16add577d17f8d56b55d7f7722b94b
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, including a critical redirector link to 'ttraff.com'. This suggests a link farm or phishing lure designed to redirect users to malicious content. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of numerous external links points to a social engineering attack.

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=transformers+fanfiction+prowl
    • http://files.koahspearguns.com/uploads/1/3/1/4/131406717/kigobag.pdf
    • https://cdn.shopify.com/s/files/1/0430/5394/0887/files/97266615553.pdf
    • https://cdn.shopify.com/s/files/1/0434/8418/4728/files/41362359645.pdf
    • https://cdn.shopify.com/s/files/1/0437/1454/3771/files/21613052792.pdf
    • https://cdn.shopify.com/s/files/1/0433/6464/7077/files/39224889207.pdf
    • https://cdn.shopify.com/s/files/1/0431/4962/3462/files/backyard_aquaponics_ibc.pdf
    • https://cdn.shopify.com/s/files/1/0433/0523/8692/files/97258114917.pdf
    • https://cdn.shopify.com/s/files/1/0431/0702/5056/files/80984344156.pdf
    • https://cdn.shopify.com/s/files/1/0438/4591/0678/files/koruwefesololusagopil.pdf
    • https://cdn.shopify.com/s/files/1/0429/4760/8730/files/jovudelaxop.pdf
    • https://cdn.shopify.com/s/files/1/0438/6871/7216/files/elementary_statistics_triola_10th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/7113/6154/files/entrepreneurship_development_notes_for_bba.pdf
    • https://cdn.shopify.com/s/files/1/0430/1612/6625/files/fezirafozesevosamatofe.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_off000076a9.bin
93d631f3a5b2b8320e87e47aebfef48ad2c69027f0524415cdaf152acc244a0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76A9 5200 bytes
font_01_sfnt_off00008855.bin
01daa193aaf6756af6c78c585b13444777fb8475c64bb58a3b85e8bc3d3087e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8855 10464 bytes

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