Malicious PDF — malware analysis report

Static analysis result for SHA-256 df9adac03122500e…

MALICIOUS

PDF

50.5 KB Created: 2020-08-17 00:22:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a1a2e946b94af2fd01f39583e8dd7d1d SHA-1: b5abf8411ba0dd607ff4a736ec0562c725a7439f SHA-256: df9adac03122500edc6794f00c82d44058c988f6ce16e347edc19fb45aa2ffba
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but the primary link directs to a known malicious redirector at ttraff.com. This suggests a phishing or scam attempt, likely to lead the user to a malicious site. The document body is heavily obfuscated and contains the malicious URL, reinforcing the attack pattern.

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=ejercicios+resueltos+de+algebra+booleana+pdf
    • http://files.cameronshardware.com/uploads/1/3/0/8/130874192/wimikom-dogax.pdf
    • http://files.cybersecurityinc.net/uploads/1/3/2/6/132681938/natuwafegaga.pdf
    • https://cdn.shopify.com/s/files/1/0434/6806/2872/files/fozomizobebokipibekadodu.pdf
    • https://cdn.shopify.com/s/files/1/0429/4112/0679/files/collapse_in_r.pdf
    • https://cdn.shopify.com/s/files/1/0430/0341/2633/files/maxodonotafezo.pdf
    • https://cdn.shopify.com/s/files/1/0435/9431/7981/files/cosmos_cable_gland_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0431/8602/8708/files/balarama_malayalam_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/2010/7424/files/76121729408.pdf
    • https://cdn.shopify.com/s/files/1/0432/1227/5870/files/9798159590.pdf
    • https://cdn.shopify.com/s/files/1/0434/0449/2965/files/gawerinotumaxok.pdf
    • https://cdn.shopify.com/s/files/1/0449/1198/4795/files/17247575450.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063e3.bin
ae42ebb73e2fd5841a4dcb807d8df14871a43a07d18c598401d7a0d77cf9612b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63E3 5496 bytes
font_01_sfnt_off0000769f.bin
72fa59cceb3bfa5b716b5cd93ff212a1174fa8a7c852ecde3512966f83562e5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x769F 16040 bytes
font_02_sfnt_off0000a69e.bin
ae97ebdbf5cb6679ee3ae7f6f8963da9ec2437ada1f672a33085bc8cbe806833		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA69E 16060 bytes

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