Malicious PDF — malware analysis report

Static analysis result for SHA-256 8621389567c7da0a…

MALICIOUS

PDF

37.7 KB Created: 2020-08-21 01:18:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f251bbecd841c76906aefb362a7c756 SHA-1: ed919ed9cb275076bf291c1f285f0d2de74462e0 SHA-256: 8621389567c7da0a006223a1e2c799dd0d43f6b976b4a6afdf80d7a24d1e339a
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDF files. One critical heuristic identified a link to a known malicious redirector at `https://ttraff.ru/pify?keyword=arrestador+de+flama+pdf`. This suggests the document is designed to act as a link farm, potentially leading users to malicious content or phishing sites.

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=arrestador+de+flama+pdf
    • http://tenid.watkinsdancecompany.com/uploads/1/3/1/4/131453645/vigito-marulesizedodi-kumajatul.pdf
    • https://cdn.shopify.com/s/files/1/0431/7364/2406/files/3d_gun_models.pdf
    • https://cdn.shopify.com/s/files/1/0434/1514/2567/files/autocad_course_file.pdf
    • https://cdn.shopify.com/s/files/1/0431/6053/5196/files/lagukajivos.pdf
    • https://cdn.shopify.com/s/files/1/0429/7667/3946/files/cbic_exam_secrets_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/50398535586.pdf
    • https://cdn.shopify.com/s/files/1/0431/4575/6821/files/29171499507.pdf
    • https://cdn.shopify.com/s/files/1/0465/9511/3125/files/brothers_and_sisters_theme_song.pdf
    • https://cdn.shopify.com/s/files/1/0430/0832/7829/files/jexikakipigezow.pdf
    • https://cdn.shopify.com/s/files/1/0434/5764/2648/files/berlin_definition_ards.pdf
    • https://cdn.shopify.com/s/files/1/0434/7078/2624/files/62675622818.pdf
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/babekomepiferububiferevi.pdf
    • https://cdn.shopify.com/s/files/1/0430/1760/1181/files/32103391760.pdf
    • https://cdn.shopify.com/s/files/1/0428/7699/3695/files/can_bus_communication.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_off000052e2.bin
51551f48dd053cfe17871c4fd0a030d316e5fef49b9a254d0a256798a2e2f3f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52E2 5176 bytes
font_01_sfnt_off00006468.bin
bd6d506de044d0d0d5f805aabeb80714a820728423de01c6f06152454debab56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6468 11068 bytes

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