Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca44caf02b605f2e…

MALICIOUS

PDF

43.8 KB Created: 2020-08-19 17:24:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab1d67bbbc0855828b96d75faaf80808 SHA-1: 9f7c14b9970c12cd2f9a7e986ca3a4a680ab0f93 SHA-256: ca44caf02b605f2e4f08f119cbc469c78c8ecd1ba86776bf77c6ef43b4176f48
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a driver download. The document also features a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic. No scripts were extracted, but the presence of the malicious redirector and the link farm strongly indicate 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=canon+mf3010+scanner+driver+free
    • http://files.barronparkpreschool.com/uploads/1/3/0/9/130969498/zevilomopuluv_setidafuf_sidepe.pdf
    • http://files.carnivora.co/uploads/1/3/2/7/132710592/6d36c1e0a.pdf
    • http://files.williamzin.com/uploads/1/3/0/7/130776757/b58d8b03467308.pdf
    • https://cdn.shopify.com/s/files/1/0430/8035/1897/files/oblivion_corruption_and_conscience.pdf
    • https://cdn.shopify.com/s/files/1/0428/7827/1651/files/brief_psychotic_disorder_dsm_5.pdf
    • https://cdn.shopify.com/s/files/1/0432/3016/7202/files/50708921357.pdf
    • https://cdn.shopify.com/s/files/1/0435/3127/2351/files/botigipaxapawoxesuwekaze.pdf
    • https://cdn.shopify.com/s/files/1/0434/5495/5672/files/automobile_engineering_by_kirpal_singh_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/3923/4967/files/16469742711.pdf
    • https://cdn.shopify.com/s/files/1/0433/4052/9816/files/govifisorevuxifefasirudiv.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nojigepinipefonumupitos.pdf
    • https://cdn.shopify.com/s/files/1/0440/9815/8744/files/8762874541.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_off000064b0.bin
21f023674ee5ffbc885f189c14cf2b5cb6ab18709fd4ffacb573c2bf253f9817		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64B0 5460 bytes
font_01_sfnt_off00007731.bin
b72572747690b65ca58a7eb27b22f8771005ee80cb787d236a00e35cac6f1cf9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7731 13652 bytes

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