Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f9e6d1c447f8c46…

MALICIOUS

PDF

43.6 KB Created: 2020-08-08 05:55:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 16ea8c196baeaf317231af1247c5df9b SHA-1: 44b7d9ef038d0176fa771a938a8c7c0d66293d33 SHA-256: 0f9e6d1c447f8c46aafb26c50f385da602b3f3643ae5564e4c3d0dd18e9da3ec
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=plano+metro+barcelona+2020+pdf, which is likely intended to lead users to further malicious content. The document body, though heavily obfuscated, contains this URL and other Shopify links, suggesting a link farm or SEO poisoning tactic to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=plano+metro+barcelona+2020+pdf
    • http://bodade.clearfieldcreekwatershed.org/uploads/1/3/0/8/130814769/a3333.pdf
    • http://files.lachlanswan.com/uploads/1/3/2/6/132682210/niviteza.pdf
    • http://files.lukalahfarm.agency/uploads/1/3/1/6/131606630/0317872.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0427/7318/4678/files/85179021412.pdf
    • https://cdn.shopify.com/s/files/1/0431/2920/8992/files/ontology_engineering_in_semantic_web.pdf
    • https://cdn.shopify.com/s/files/1/0435/0659/8040/files/srimad_bhagavatam_in_tamil_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/2727/4645/files/learning_and_development_framework.pdf
    • https://cdn.shopify.com/s/files/1/0434/6360/6437/files/55447653864.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mobisibat.pdf
    • https://cdn.shopify.com/s/files/1/0431/8140/8420/files/30250830098.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vuketunaxu.pdf
    • https://cdn.shopify.com/s/files/1/0437/1926/2357/files/el_aprendizaje_visual.pdf
    • https://cdn.shopify.com/s/files/1/0435/9972/4702/files/espironolactona_bula.pdf
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/lipik.pdf
    • https://cdn.shopify.com/s/files/1/0432/1935/3757/files/97742344855.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000607c.bin
7298f8c10bc293bd0a4e80dcd3415f4a5c7cb34566d7b19e35383053eb17f32d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x607C 5536 bytes
font_01_sfnt_off0000732f.bin
8104d4a9c985e4da4029c5a640ad07e89ae0e1bc088377fe1a9ae80e8a2a34be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x732F 2116 bytes
font_02_sfnt_off00007ce0.bin
10e5ccb4d6130b6edbe06f5dcff6bcdcd1b213e27bbd6e1cb4179d5031a9b8ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CE0 10628 bytes

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