Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9ebde84b671cec6…

MALICIOUS

PDF

33.3 KB Created: 2020-08-27 21:17:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61681e3b3a7e7689b8292b5c407e641b SHA-1: 10da95ab5763db2fe3a74e618d0edd31aae34084 SHA-256: a9ebde84b671cec6a5eb374b7245143fecaf3330aec919468e2cd93a9d212f16
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a PDF SEO link farm. The primary malicious URL, 'https://ttraff.ru/pify?keyword=captain+planet+sega+genesis', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting its purpose is to lure users to malicious infrastructure.

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=captain+planet+sega+genesis
    • http://files.burghyart.com/uploads/1/3/1/8/131871772/vevelu.pdf
    • https://cdn.shopify.com/s/files/1/0450/3640/4900/files/esl_adverbs_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0430/6114/9850/files/setatebavenupakujaxudivo.pdf
    • https://cdn.shopify.com/s/files/1/0428/2092/7644/files/zobubotuwurix.pdf
    • https://cdn.shopify.com/s/files/1/0437/3243/5093/files/pdf_to_docx_converter_mac.pdf
    • https://cdn.shopify.com/s/files/1/0433/3459/8809/files/98891355411.pdf
    • https://cdn.shopify.com/s/files/1/0440/1666/4734/files/fasezamogoxezovegifuf.pdf
    • https://cdn.shopify.com/s/files/1/0432/4232/4125/files/90044069244.pdf
    • https://cdn.shopify.com/s/files/1/0432/9550/6592/files/mudutugijilopapumil.pdf
    • https://cdn.shopify.com/s/files/1/0427/7692/0220/files/jimidoxewapevizejuwovu.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_off00004600.bin
b806be36b664d8286a983031ea1db997ddd1432be6017936266e6632978a743a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4600 4796 bytes
font_01_sfnt_off00005669.bin
93ea44cdcf76d5a5ea38ad26d6174999127c21f06dd53bc316022475a730db7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5669 10128 bytes

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