Malicious PDF — malware analysis report

Static analysis result for SHA-256 5896151bd895d2e8…

MALICIOUS

PDF

39.0 KB Created: 2020-08-08 02:47:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a0cd4cca2b87190e9a7cd7c030c30048 SHA-1: 069b6274128731f820f490a2442e93cb6388bfd9 SHA-256: 5896151bd895d2e8b5d68082f9b25b2bc4c653ee373ab820e3a7242db75b492c
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical redirector link to ttraff.ru, indicating a phishing or redirection attempt. The document body, though partially corrupted, contains text related to service manuals and the malicious URL, suggesting a lure to disguise the malicious intent. The ML classifier strongly supports the malicious verdict.

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/wb?keyword=fisher%20and%20paykel%20e402b%20service%20manual
    • http://roxezo.completecritter.com/uploads/1/3/1/3/131379730/pevatoxer.pdf
    • http://files.yfyliveguam.org/uploads/1/3/0/7/130776275/numelujan.pdf
    • http://files.soarministries.org/uploads/1/3/1/4/131411688/nusoperikizuxo-dusave-foxamodozegom.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/hamilton_beach_ice_cream_maker_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/6626/9600/files/rexunukawizumabadix.pdf
    • https://cdn.shopify.com/s/files/1/0434/0993/2440/files/wavetivefazekipor.pdf
    • https://cdn.shopify.com/s/files/1/0427/7056/3239/files/malumovexazikelago.pdf
    • https://cdn.shopify.com/s/files/1/0435/2681/5895/files/wobalonokisarov.pdf
    • https://cdn.shopify.com/s/files/1/0439/0112/4760/files/nozove.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kubogofire.pdf
    • https://cdn.shopify.com/s/files/1/0432/1699/4466/files/21890791879.pdf
    • https://cdn.shopify.com/s/files/1/0440/6503/0309/files/how_to_update_g.pdf
    • https://cdn.shopify.com/s/files/1/0428/5058/2684/files/twin_bunk_bed_plans.pdf
    • https://cdn.shopify.com/s/files/1/0428/9308/2783/files/dojexoz.pdf
    • https://cdn.shopify.com/s/files/1/0440/8839/3893/files/xamibupovugunonebuzexas.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_off0000566f.bin
00f9060bd12da7e527169d9d040f6bcb08f4f77dee86970e62437975d899c773		 pdf-font-stream PDF embedded font (sfnt) at offset 0x566F 5996 bytes
font_01_sfnt_off00006ac0.bin
eabe7a6ffbc0f719d35adff90fcd8df9a9d20028767d89433bce30dad9dd1031		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC0 10744 bytes

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