Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3b70a26cd81b877…

MALICIOUS

PDF

36.7 KB Created: 2020-08-15 06:52:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 783282adea3f606202f28caf46805ba7 SHA-1: 0928ab496eb1a357efeffb8483b91100bf38b9cb SHA-256: c3b70a26cd81b877f51161533ed736f2465591f4e52b40521e05fb6a8b46ed07
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link and a link farm. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/pify?keyword=mercurio+powerpoint+presentation+template+free, which is flagged as malicious. This suggests the document is designed to trick users into visiting a malicious site by appearing to offer a free presentation template. The presence of numerous other links, many pointing to Shopify, indicates a potential SEO-based lure to distribute malicious 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.ru/pify?keyword=mercurio+powerpoint+presentation+template+free
    • http://pifig.jenniecaseysinnott.com/uploads/1/3/1/6/131606289/zijoletem.pdf
    • https://cdn.shopify.com/s/files/1/0432/6375/4404/files/562186947.pdf
    • https://cdn.shopify.com/s/files/1/0429/6966/1589/files/26178019395.pdf
    • https://cdn.shopify.com/s/files/1/0428/4078/5062/files/components_of_vocational_guidance.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/investor_presentation_example.pdf
    • https://cdn.shopify.com/s/files/1/0433/8820/7255/files/duvuxufizixomijosuzokor.pdf
    • https://cdn.shopify.com/s/files/1/0454/4344/8990/files/valores_esteticos.pdf
    • https://cdn.shopify.com/s/files/1/0431/0925/3281/files/bidezogokukoba.pdf
    • https://cdn.shopify.com/s/files/1/0429/0209/3987/files/33225610754.pdf
    • https://cdn.shopify.com/s/files/1/0435/0273/1430/files/mogovazalidedakovibud.pdf
    • https://cdn.shopify.com/s/files/1/0432/3839/1970/files/33103478692.pdf
    • https://cdn.shopify.com/s/files/1/0431/2160/6820/files/zeniked.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_off00005207.bin
b1ca4006e4e9e416e7fb8408220cca1684adda3265d9d447d7e843533249b7d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5207 5256 bytes
font_01_sfnt_off000063e5.bin
5a877d44423b66e052ab63f80821695e01396f2f11f08d18f71028ec0b41459b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63E5 9976 bytes

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