Malicious PDF — malware analysis report

Static analysis result for SHA-256 5350607154ee3e64…

MALICIOUS

PDF

55.6 KB Created: 2020-08-09 12:02:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9417c895870cf29329678a2838357add SHA-1: 58051973b9ad4a9bb7d7de69226aca24e3ecdc3f SHA-256: 5350607154ee3e64ceb73ee5c6fc0ab5a3b3999af605c2ec6c11a7ebad836a77
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL and numerous other links to PDF files hosted on various domains, suggesting a link farm or SEO poisoning tactic. The primary malicious URL is a redirector designed to lead users to potentially harmful content.

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.com/pify?keyword=nomenclatura+quimica+inorganica+ejercicios+resueltos+pdf
    • http://files.phyzarre.com/uploads/1/3/1/4/131407572/7349395.pdf
    • http://files.mscarreyslearninggateway.com/uploads/1/3/0/8/130815009/4329f41.pdf
    • http://files.airwrweb.com/uploads/1/3/1/4/131437680/lonove-vinukuxewo-jalul-luguzedubimoxef.pdf
    • http://files.rockybuttecoffee.com/uploads/1/3/0/7/130775092/zujumebojed.pdf
    • http://files.doggydilemmas.co/uploads/1/3/1/3/131383771/510bbb9890.pdf
    • https://cdn.shopify.com/s/files/1/0435/5158/8507/files/gutizufawevo.pdf
    • https://cdn.shopify.com/s/files/1/0432/1270/1854/files/wotidufaxatutukav.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/negopolikutowuz.pdf
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/bajifox.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pafinekumukomotutawewokab.pdf
    • https://cdn.shopify.com/s/files/1/0431/5221/2130/files/spanish_self_learning_books.pdf
    • https://cdn.shopify.com/s/files/1/0438/0547/4978/files/wapejogub.pdf
    • https://cdn.shopify.com/s/files/1/0432/7243/7910/files/nosadade.pdf
    • https://cdn.shopify.com/s/files/1/0428/6555/7670/files/vector_addition_problems_with_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0431/2183/6193/files/ancient_china_timeline.pdf
    • https://cdn.shopify.com/s/files/1/0437/2601/2567/files/narawifuzakotoresuvor.pdf
    • https://cdn.shopify.com/s/files/1/0450/2568/9758/files/victoria_boutenko_green_for_life.pdf
    • https://cdn.shopify.com/s/files/1/0433/2778/3080/files/kivibukidonojopaxenoxe.pdf
    • https://cdn.shopify.com/s/files/1/0431/1869/0458/files/advantages_of_a_questionnaire.pdf
    • https://cdn.shopify.com/s/files/1/0430/7661/6341/files/2929427900.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/
    • https://cdn.shopify.com/s/files/1/0431/1869/0458/files/adv

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000083c2.bin
69e363b561a546897c5225eb67646e3e7b107e3a046f83621a5d998d55237657		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83C2 1664 bytes
font_01_sfnt_off00008bb7.bin
0abd904c4e5ac79ee582e77caeb229e1f45b420fc7c4ffdc00e1e89be1d86fd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BB7 5648 bytes
font_02_sfnt_off00009ed9.bin
99c7477d1d97b8c062d44d9a18fa0f717d2d36b5d783be762493df259ce33853		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9ED9 15944 bytes

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