Malicious PDF — malware analysis report

Static analysis result for SHA-256 5354d55b7d39fe67…

MALICIOUS

PDF

115.8 KB Created: 2020-08-03 09:06:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 537955de15b156ba1df346d8cbf9d0e0 SHA-1: b22a925c6bf120fc0945c1fc5a4f466f7618621d SHA-256: 5354d55b7d39fe676b4b8c64c11e76e0ece25fa85d293e1ff02768ac634191ad
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 a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the redirector. The primary purpose appears to be directing users to potentially harmful content through a link farm.

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=tabletop+simulator+nexus
    • http://files.tourdestreescanada.com/uploads/1/3/1/4/131406372/gaxemafajemugudop.pdf
    • http://files.glowingglassstudio.com/uploads/1/3/2/6/132681560/646188.pdf
    • http://files.acucenter-richmond.com/uploads/1/3/0/7/130738719/fa28bd958.pdf
    • http://files.longbacken.com/uploads/1/3/0/7/130776536/6991455.pdf
    • https://cdn.shopify.com/s/files/1/0430/6803/1143/files/nilegodokipo.pdf
    • https://cdn.shopify.com/s/files/1/0428/3485/4051/files/14694069395.pdf
    • https://cdn.shopify.com/s/files/1/0431/7157/8024/files/delugesitowewalu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34597476450.pdf
    • https://cdn.shopify.com/s/files/1/0435/2881/4741/files/seveze.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51851907441.pdf
    • https://cdn.shopify.com/s/files/1/0432/2718/5309/files/72842645167.pdf
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/49140959008.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/31297044611.pdf
    • https://cdn.shopify.com/s/files/1/0430/6694/9799/files/32313443626.pdf
    • https://cdn.shopify.com/s/files/1/0432/2652/9956/files/54305629250.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000170fa.bin
a44e8d701713c5bbab63b3715633508678ebbfa8221064e28b8e97a440f56e36		 pdf-font-stream PDF embedded font (sfnt) at offset 0x170FA 5004 bytes
font_01_sfnt_off000181e0.bin
25bd4bf81cbff9493a71a169fa69cc0b909ee0ca5ef9841aa9620cb39c2dd16a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x181E0 11252 bytes
font_02_sfnt_off0001a85e.bin
8b6580eb7e18fde2b368b9fa166a7c4083fb741d140892367d10ed76c63f30df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A85E 2944 bytes
font_03_sfnt_off0001b393.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B393 4324 bytes

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