Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8de3a7f1be625ee…

MALICIOUS

PDF

36.4 KB Created: 2020-08-31 03:44:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54765cc9ef01f6667a31d73628894528 SHA-1: 9ffa9646d408810aa65255ab5c879f66230684a7 SHA-256: b8de3a7f1be625ee5d61ea002158e1bab8f442c0a838a67d94807470b63176be
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one critical heuristic firing indicating a link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Zootopia' and a URL that aligns with the malicious redirector. The presence of a large number of external PDF links, many hosted on static.usrfiles.com, suggests a link farm or SEO poisoning tactic 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/wix?keyword=zootopia+1080p+izle
    • https://static.usrfiles.com/ugd/b8c837_17995a2bf20845c4b2eb9345ba82413d.pdf
    • https://static.usrfiles.com/ugd/4d935e_613d575d3d804349b68a52978802e232.pdf
    • https://static.usrfiles.com/ugd/41a0b6_7cf70137e2144142b2ac17f9bd592c86.pdf
    • https://static.usrfiles.com/ugd/badafb_6a292e2263ca4d43a91b01fb60bf57f9.pdf
    • https://static.usrfiles.com/ugd/83b1b3_ed313b77cff9499586b84256bc25cfc7.pdf
    • https://cdn.shopify.com/s/files/1/0440/7335/3381/files/ejercicios_numeros_primos_y_compuestos_5_primaria.pdf
    • https://cdn.shopify.com/s/files/1/0433/4567/4389/files/avatar_musik_teamobi.pdf
    • https://cdn.shopify.com/s/files/1/0435/2563/6248/files/kipewatupog.pdf
    • https://cdn.shopify.com/s/files/1/0434/2513/6792/files/plant_biochemistry_notes.pdf
    • https://cdn.shopify.com/s/files/1/0440/8462/5558/files/teliva.pdf
    • https://static.usrfiles.com/ugd/6846fe_4f419b452dc34b7aa67f502d58dcdf92.pdf
    • https://static.usrfiles.com/ugd/0cd3a8_c2877ee5027e456a923464dc5d23f539.pdf
    • https://static.usrfiles.com/ugd/5926b4_105bf1555cd943d3a3fd5fb8483e032f.pdf
    • https://static.usrfiles.com/ugd/b8c837_e4a94a6ddf6d452cbc41c039b8f8e669.pdf
    • https://static.usrfiles.com/ugd/362633_4dd3b93b80394e4ca91d4e9f99552904.pdf
    • https://static.usrfiles.com/ugd/e3ed1f_f92217a88313410c93ea02616bb24dea.pdf
    • https://static.usrfiles.com/ugd/77d535_4b5f462607354bee9f0a28d761bad8b6.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_off000052b8.bin
3f980012cc4a2db0e8799c67b52637f08ffa11efa57298fb6b875ed8e2f6d054		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52B8 4932 bytes
font_01_sfnt_off0000639c.bin
307799bd283c1c8002e41b14b6c2fd49068d0526b54cef6c37891bb916e32569		 pdf-font-stream PDF embedded font (sfnt) at offset 0x639C 9936 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.