Malicious PDF — malware analysis report

Static analysis result for SHA-256 af34cfd15e3f46bd…

MALICIOUS

PDF

42.4 KB Created: 2020-08-06 23:37:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42a87e42f8d149194b3d658f2e037835 SHA-1: 2c5760940886b7699a08e415ad287cf66cfce9db SHA-256: af34cfd15e3f46bd3f86d19a914119c3891acd5582100fd426b1a647c15d3e16
120 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 of which point to external resources hosted on Shopify. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=administra%25C3%25A7%25C3%25A3o+por+objetivos+pdf'. This suggests the document is designed to lead users to malicious sites, likely for phishing or malware distribution.

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=administra%25C3%25A7%25C3%25A3o+por+objetivos+pdf
    • http://files.mhschoirs.com/uploads/1/3/2/6/132683000/e4279.pdf
    • http://files.muniakfamily.com/uploads/1/3/0/7/130775813/povijifapeza-kimajuvilesot-sijelusivisibaw-zomokiwixanuki.pdf
    • http://files.matusnursingreview.com/uploads/1/3/1/1/131163832/kogiwux.pdf
    • http://rovibane.queenbeecoffeeco.com/uploads/1/3/0/8/130813821/tawipipe.pdf
    • http://files.u3ahavelocknorth.com/uploads/1/3/0/8/130814308/3352304.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/94393320092.pdf
    • https://cdn.shopify.com/s/files/1/0431/0718/8898/files/24504940496.pdf
    • https://cdn.shopify.com/s/files/1/0433/5498/0505/files/rupepapajas.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78683638278.pdf
    • https://cdn.shopify.com/s/files/1/0428/1883/0503/files/xatimozetibib.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mozesuseb.pdf
    • https://cdn.shopify.com/s/files/1/0437/7952/2714/files/protocolos_adicionales_a_los_convenios_de_ginebra_de_1949.pdf
    • https://cdn.shopify.com/s/files/1/0431/2452/3169/files/88267748138.pdf
    • https://cdn.shopify.com/s/files/1/0427/8488/2844/files/16801637052.pdf
    • https://cdn.shopify.com/s/files/1/0450/9827/0885/files/ielts_writing_task_1_model_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4977/files/critical_thinking_definition.pdf
    • https://cdn.shopify.com/s/files/1/0429/3158/5180/files/81555899780.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_off00006250.bin
fb6c432b61de26a4878c28bf9e33e69224d713be95e2301c64f6e415d3f09940		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6250 5920 bytes
font_01_sfnt_off000075d6.bin
b6b20f796e2775f3bb3513c21453f51b139fd08c95901ecb7f430b17b656cea8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75D6 12228 bytes

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