Malicious PDF — malware analysis report

Static analysis result for SHA-256 b152e31da1d008f3…

MALICIOUS

PDF

39.1 KB Created: 2020-08-20 00:07:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aeb7c0052e21227d0de27677908470fa SHA-1: 1d56842b6377124c053e00f4d5d6ede000a5762a SHA-256: b152e31da1d008f3318119c713f00a1d3374ba8bab9ebc01e817f3258b199789
150 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=blender+deform+mesh'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on shopify.com. The ML classifier also strongly flagged this PDF as malicious. The presence of the malicious redirector URL suggests an attempt to lead the user to a malicious site, likely for phishing or malware delivery.

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=blender+deform+mesh
    • http://files.mylifeonitshead.com/uploads/1/3/2/6/132682561/sadikolejudezonaluje.pdf
    • https://cdn.shopify.com/s/files/1/0433/5498/0505/files/23255083926.pdf
    • https://cdn.shopify.com/s/files/1/0440/4995/7029/files/bazek.pdf
    • https://cdn.shopify.com/s/files/1/0435/8828/8670/files/accounts_payable_interview_questions_and_answers_for_job.pdf
    • https://cdn.shopify.com/s/files/1/0437/5016/2583/files/aquatic_ecosystem_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/6887/5157/files/gefemunise.pdf
    • https://cdn.shopify.com/s/files/1/0430/4447/0938/files/sutin.pdf
    • https://cdn.shopify.com/s/files/1/0433/0648/3876/files/sosixaguvukonubamalusa.pdf
    • https://cdn.shopify.com/s/files/1/0431/4388/9058/files/31490353173.pdf
    • https://cdn.shopify.com/s/files/1/0433/7201/9877/files/kopilenunefidogajajugumul.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_off00005cde.bin
27be83dc0443a58826fa8a4c238817f232e3d9b67742ee5b5636ac8108443af0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CDE 4984 bytes
font_01_sfnt_off00006dab.bin
f71c73d37efac6af02d6e14d9d28a0b51b0f6c18e3d24942e85839aacb13c761		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DAB 10032 bytes

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