Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe2815af704da8e8…

MALICIOUS

PDF

51.4 KB Created: 2020-08-02 23:19:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4afc2d19b79eb341be65ce80c1a8ad08 SHA-1: 549aae1b9678d3074bea539e766c03fb989f2460 SHA-256: fe2815af704da8e81df88e071dad4c0a521754c2af089728b036c54088ff04ea
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, many of which point to a redirector service. The document body, though heavily obfuscated, contains text that suggests it is a 'dumbbell exercises chart pdf'. The primary malicious URL identified is ttraff.ru, which is known to host malicious redirectors. The file's structure and link farm indicate a social engineering attempt to drive traffic 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=dumbbell+exercises+chart+pdf
    • http://files.kimberleyashleecatering.com/uploads/1/3/0/7/130776159/a24c0a9d8.pdf
    • http://files.toothnscale.com/uploads/1/3/2/7/132740747/346fa.pdf
    • http://files.tonantzinsociety.com/uploads/1/3/1/3/131383698/gesuvu-losogusa-lobapobujemunu-noxomow.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/golizikedakumeru.pdf
    • https://cdn.shopify.com/s/files/1/0433/2421/1354/files/zirokabarur.pdf
    • https://cdn.shopify.com/s/files/1/0429/3050/3846/files/7061826949.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/sovusasowukajalux.pdf
    • https://cdn.shopify.com/s/files/1/0434/5420/2013/files/law_business_and_society_11th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/ledejigeguduxufipasiwo.pdf
    • https://cdn.shopify.com/s/files/1/0427/4028/5607/files/dakiduvusekokadilelanux.pdf
    • https://cdn.shopify.com/s/files/1/0434/2785/6536/files/mulusadazek.pdf
    • https://cdn.shopify.com/s/files/1/0440/5988/5733/files/binisojili.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ada.bin
77495d767aa6601a7b3fd84b84dec7f15d2572929c3c139eca338447dcdb0b72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ADA 5604 bytes
font_01_sfnt_off00007dc0.bin
465e9a0221885179c64321a3ca837f9d136f14955a30675dd0aed6097a2b50bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DC0 14504 bytes
font_02_sfnt_off0000ab24.bin
f267a97a42ed964490c0c36cf8d24d30f5cfc386ee24850e75bb3a4991f11828		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB24 16376 bytes

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