Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f6f677f5ec359bd…

MALICIOUS

PDF

44.3 KB Created: 2020-09-05 22:13:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51c74cee6e2f612799cf648714c7495d SHA-1: bf6c1dbc4d138e6fea9cd9bdcc3ccf415b999178 SHA-256: 9f6f677f5ec359bd3427ff5d6ec6825c00c003f9d8c2346e7567d94cf3e4148b
120 Risk Score

Malware Insights

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

The PDF file contains a lure for a "Coquihalla weather report" and embeds a link to a known malicious redirector. This redirector is likely used to serve further malicious payloads or lead the user to a phishing site. The PDF also contains a large number of embedded links, many pointing to Shopify, which is characteristic of SEO link farm abuse to obscure the true malicious destination.

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.club/wix?keyword=coquihalla+weather+report
    • https://cdn.shopify.com/s/files/1/0433/8047/4014/files/dexaxexusexobutikowilewo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0152/0023/files/10307494891.pdf
    • https://cdn.shopify.com/s/files/1/0429/2093/5590/files/jadasasemetuxodozig.pdf
    • https://cdn.shopify.com/s/files/1/0431/3363/2661/files/up_intermediate_time_table_2020.pdf
    • https://static.usrfiles.com/ugd/338562_22e196785df2447597f481faaebe391b.pdf
    • https://static.usrfiles.com/ugd/9219f8_60c43d98a06141688d9328f326e0ad6f.pdf
    • https://static.usrfiles.com/ugd/e2c223_cdbbd5c440d2458d943c0acfbf557660.pdf
    • https://static.usrfiles.com/ugd/9eb187_374937f9a8d34895aa141439736abdd3.pdf
    • https://static.usrfiles.com/ugd/e6092c_bdd38738d1fe489a87d5a7b1bde7ce85.pdf
    • https://cdn.shopify.com/s/files/1/0431/7285/5957/files/12916633234.pdf
    • https://cdn.shopify.com/s/files/1/0430/7946/7162/files/discord_clear_dm_history.pdf
    • https://cdn.shopify.com/s/files/1/0438/2133/4690/files/rikudunoxokasotuvirifikor.pdf
    • https://cdn.shopify.com/s/files/1/0436/1610/8701/files/fekujagavikabikug.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005bf9.bin
1f10caed510f0d59081ed5a612d93b52ad31f2e7e41cbc8980c8b2bdc27b175e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF9 4744 bytes
font_01_sfnt_off00006c4d.bin
476f566586ce444ef1110d7e82882cae6a2f5e3da4a1e240af2e23c8ff3bcd3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C4D 13420 bytes
font_02_sfnt_off0000969d.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x969D 4324 bytes

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