Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c82eee9ffb4a546…

MALICIOUS

PDF

33.5 KB Created: 2020-08-29 22:52:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b47375a62785a2a8daaa09d83afbd0aa SHA-1: 67750029323f91a3c0a29f840ffe293256762220 SHA-256: 4c82eee9ffb4a546f1956b2d2bf94fed67ea9f8de74e9d519d8da43be671e237
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link to 'https://ttraff.ru/wix?keyword=we+will+jingle' and a large number of other PDF links, indicating a link farm. This suggests the document's primary purpose is to distribute further content or manipulate search results. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=we+will+jingle
    • https://static.usrfiles.com/ugd/b8c837_6c0238f118ca4d269845d0bdfe52e7ee.pdf
    • https://static.usrfiles.com/ugd/a467d2_86cf40659b744cb6a85c6dc6d47c4b25.pdf
    • https://static.usrfiles.com/ugd/b8c837_694db9700031449888a3771616668c3d.pdf
    • https://static.usrfiles.com/ugd/b8c837_0cd9aa6b21b14e98aed75f44e3f86962.pdf
    • https://static.usrfiles.com/ugd/73f3b0_e2f51c6f797f473697ffa645fceb92d6.pdf
    • https://cdn.shopify.com/s/files/1/0427/6515/6508/files/rodakapimopuwuzexatowo.pdf
    • https://cdn.shopify.com/s/files/1/0450/8853/8776/files/fisiopatologia_de_acidosis_respiratoria.pdf
    • https://cdn.shopify.com/s/files/1/0435/2039/3380/files/pwc_blockchain_energy.pdf
    • https://cdn.shopify.com/s/files/1/0434/4823/8241/files/nozodojulafelitukiwejato.pdf
    • https://cdn.shopify.com/s/files/1/0433/5425/9606/files/beowulf_full_text.pdf
    • https://static.usrfiles.com/ugd/b8c837_f44395fece5340d8b2952a9db3289c90.pdf
    • https://static.usrfiles.com/ugd/7f46b5_42b03b4eada844a5a40187aaa0b49284.pdf
    • https://cdn.shopify.com/s/files/1/0429/2981/5711/files/singh_is_king_all_song_ming.pdf
    • https://cdn.shopify.com/s/files/1/0431/9825/1165/files/pesodegufaroxo.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_off00004761.bin
b4295c4e0fc3e2aea33608be7645f6698d75b1fc71a1f779afce8095a2a5192f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4761 4552 bytes
font_01_sfnt_off0000570f.bin
22d228b770506c585c428f6eaa0f6548f210ff009825944d8885503828066bfe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x570F 10108 bytes

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