Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fe3cf9e14f7ed90…

MALICIOUS

PDF

40.3 KB Created: 2020-08-23 15:50:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79c88b0ef2ff960a87ad3d59ee38d7be SHA-1: 44b0c4eaf08e5083c7e6e5e26c9ba22ecd4c280d SHA-256: 4fe3cf9e14f7ed905476d13f0d7536f624f65b26f59110539b47f76aa62644bc
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, identified as a link farm. One of these links, 'https://ttraff.ru/pify?keyword=summerslam+2019+review+bleacher+report', points to known malicious redirector infrastructure. The document body appears to be heavily obfuscated or corrupted, but the presence of the malicious redirector and the link farm heuristic strongly suggest an attempt to lure users to malicious sites. No scripts were extracted from this sample.

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=summerslam+2019+review+bleacher+report
    • http://files.protectplayanow.org/uploads/1/3/1/6/131606121/torisopikopiwunuzos.pdf
    • http://zevapuwez.duntonstreetcommunications.com/uploads/1/3/0/8/130874222/pexagakanani_fifora_damosu.pdf
    • https://cdn.shopify.com/s/files/1/0428/1715/9335/files/wajupojijunowab.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vekedexixerokasadoboma.pdf
    • https://cdn.shopify.com/s/files/1/0433/9440/0414/files/59048437610.pdf
    • https://cdn.shopify.com/s/files/1/0431/1243/1770/files/bosibezofeg.pdf
    • https://cdn.shopify.com/s/files/1/0433/5963/3559/files/52787852327.pdf
    • https://cdn.shopify.com/s/files/1/0427/6974/4028/files/64209065430.pdf
    • https://cdn.shopify.com/s/files/1/0457/3688/6428/files/13583547488.pdf
    • https://cdn.shopify.com/s/files/1/0447/9424/9377/files/behringer_b1520.pdf
    • https://cdn.shopify.com/s/files/1/0436/2957/6352/files/duck_migration_report.pdf
    • https://cdn.shopify.com/s/files/1/0432/1558/5448/files/vclt_text.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_off00005dfe.bin
b55ead76260ad31c05fa99d03c034eec6e504352aec63a4e6945929f9a3f15cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DFE 6048 bytes
font_01_sfnt_off0000726e.bin
910e6203ae1d04d63228b83c2c4592fb1cad5ab4a1f7d5e0d6dee2daf7fbb1c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x726E 9940 bytes

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