Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f2ba287c66b5dea…

MALICIOUS

PDF

38.8 KB Created: 2020-08-03 22:46:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c41c43dd90eb62058b09124b089c80de SHA-1: 888f4da006f4252f1ae83e9d6598d9e3e169928f SHA-256: 8f2ba287c66b5dea53e3bdfa6737eaf046d04c82ec7567f26cecc084ae29a89a
150 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, identified as a link farm. One of these links points to a known malicious redirector, ttraff.ru, which likely serves as a gateway to further malicious content or phishing pages. The presence of numerous Shopify-hosted PDF links suggests an attempt to manipulate search engine results or distribute a large volume of content, potentially malicious.

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=archive+magazine+pdf+free+download
    • http://files.rwc-dv.org/uploads/1/3/0/9/130969728/xivuxixikebibogojox.pdf
    • http://files.grapes.global/uploads/1/3/2/6/132682883/romubivopevel.pdf
    • http://files.toddkongart.com/uploads/1/3/1/4/131409693/temepebame_zotexumopekafo_nuvurixuturop.pdf
    • http://files.netherlandsandcoloniesrevenues.com/uploads/1/3/0/7/130739646/pinizonubelev.pdf
    • http://files.synergyies.com/uploads/1/3/1/4/131437276/9691345.pdf
    • http://files.grapes.global/uploads/1/3/2/6/132682883
    • https://cdn.shopify.com/s/files/1/0437/1329/8581/files/35404746329.pdf
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/dunap.pdf
    • https://cdn.shopify.com/s/files/1/0436/7400/9753/files/17343365702.pdf
    • https://cdn.shopify.com/s/files/1/0432/9606/3652/files/28178817407.pdf
    • https://cdn.shopify.com/s/files/1/0435/3366/4411/files/stretching_by_bob_anderson.pdf
    • https://cdn.shopify.com/s/files/1/0435/2340/8032/files/borub.pdf
    • https://cdn.shopify.com/s/files/1/0432/6414/7609/files/adjektivdeklination_bungen_pdf_b1.pdf
    • https://cdn.shopify.com/s/files/1/0428/3590/2631/files/95471087039.pdf
    • https://cdn.shopify.com/s/files/1/0430/6819/4978/files/43171823027.pdf
    • https://cdn.shopify.com/s/files/1/0428/5700/5215/files/mewuzunavobe.pdf
    • https://cdn.shopify.com/s/files/1/0435/6302/4542/files/canon_powershot_s2_is.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_off000057c1.bin
a7b9fec834aeda45b4ff856cd445a1f5f237dd5fe73da566df79f2ab896b55bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57C1 5580 bytes
font_01_sfnt_off00006ab6.bin
5be9b3bbc7625eabec7cfa88b7cf9fb1527c6efb4e756a08eb059a8b2a7f6a2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB6 10348 bytes

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