Malicious PDF — malware analysis report

Static analysis result for SHA-256 7efc6d523744bcbb…

MALICIOUS

PDF

40.9 KB Created: 2020-08-31 03:43:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 715ec9ce6e150bc573cbdd8f6b9b5808 SHA-1: d02d71fbbf4adc8226aa387531bbf0844d80ebe8 SHA-256: 7efc6d523744bcbbfa3c8ab845a25ecdbcbed4e51de93385334ebb5c1b16b0a7
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a specific malicious redirector URL, suggesting a phishing or social engineering attempt. The document body text, though partially corrupted, includes the search query 'Juda hoke bhi mp3 song download' and the malicious URL, indicating an attempt to trick the user into clicking the link. The presence of numerous links to static.usrfiles.com, while individually benign, contributes to the overall SEO spam nature of the document.

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.cc/wix?keyword=juda+hoke+bhi+mp3+song+download
    • https://static.usrfiles.com/ugd/af0aa9_ed9ebc8743674dc697c7bfbe50deaca8.pdf
    • https://static.usrfiles.com/ugd/3dd68e_9c4c4378c8ca42eb83e44454d1339ecd.pdf
    • https://static.usrfiles.com/ugd/2f8cea_bf985c49b7164ac1970d2692b7e6577d.pdf
    • https://static.usrfiles.com/ugd/4c1554_f83988a525c647978e8de90331e63468.pdf
    • https://static.usrfiles.com/ugd/bd5c68_30d14bc161c64caf8f8a09e3753bb67d.pdf
    • https://static.usrfiles.com/ugd/b8c837_1a68b588fcee4f509b10402ac94df59f.pdf
    • https://static.usrfiles.com/ugd/b8c837_cc7a68105eab4662814b48350b85eaa7.pdf
    • https://static.usrfiles.com/ugd/2ac701_a60496fea9cd4994b56c632bf683ee74.pdf
    • https://static.usrfiles.com/ugd/b8c837_2118bb7747e146ccbc5113a3c7f1e372.pdf
    • https://static.usrfiles.com/ugd/b8c837_1858676660804e6b885624829c01250d.pdf
    • https://static.usrfiles.com/ugd/b8c837_2968bec767fc414990ff7115e05a105f.pdf
    • https://static.usrfiles.com/ugd/b8c837_f799a9d80fbb45e8975088f6cd2f7cae.pdf
    • https://static.usrfiles.com/ugd/b8c837_a5e9458c90b34e73960410e25f210f61.pdf
    • https://static.usrfiles.com/ugd/80c1db_e33ec6c40c5b40758c8acff5bc2943ff.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_off000057f0.bin
de6d8d863a363a2a43cd952fbeee2de778a9ee6b662fcbba68eaa7a553b7bb1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57F0 5728 bytes
font_01_sfnt_off00006b60.bin
72d6cc66646d7e2592ebebb8d7e87a6d8d36d99ea3638f2b2463f636e6dcdcb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B60 13872 bytes

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