Malicious PDF — malware analysis report

Static analysis result for SHA-256 b217d84218286da1…

MALICIOUS

PDF

47.6 KB Created: 2020-08-28 22:20:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80c3f44e3452fa1d58c60040679b35cf SHA-1: 4650ca1c830d86cd8098a28867eb00ee22db2daf SHA-256: b217d84218286da1f13563f6ed872d81c899ea7decae91e871ce65d2db4033e1
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious content. One of the embedded URLs, https://ttraff.cc/wix?keyword=homorganic+nasal+rule, is flagged as a known malicious redirector. The document body contains garbled text but includes the same suspicious URL and a link to a Shopify-hosted PDF, suggesting a link farm or redirection strategy.

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=homorganic+nasal+rule
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/2901562547.pdf
    • https://cdn.shopify.com/s/files/1/0431/5181/8903/files/tibojokakiredikanovifokud.pdf
    • https://cdn.shopify.com/s/files/1/0431/8960/0414/files/8328935670.pdf
    • https://cdn.shopify.com/s/files/1/0433/1978/7675/files/kenmore_elite_dryers_troubleshooting.pdf
    • https://static.usrfiles.com/ugd/b8c837_dfc587d6c35a4f17877ed0369fc95c21.pdf
    • https://static.usrfiles.com/ugd/b8c837_47b75c2ec8b442cbbc60aa9968ffe8a5.pdf
    • https://static.usrfiles.com/ugd/b8c837_ef21abd4d10d4d0490ede476d398db3f.pdf
    • https://static.usrfiles.com/ugd/b8c837_fbad77c40c464302a7f3396c96280163.pdf
    • https://cdn.shopify.com/s/files/1/0433/8103/1075/files/anandamela_pujabarshiki_1426_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/9450/6661/files/delicious_world_game.pdf
    • https://cdn.shopify.com/s/files/1/0434/3123/1655/files/kivadakemomuvigosoretoz.pdf
    • https://cdn.shopify.com/s/files/1/0429/0838/5439/files/83379142741.pdf
    • https://cdn.shopify.com/s/files/1/0431/5581/6599/files/tenebuxuxuzopugozitab.pdf
    • https://cdn.shopify.com/s/files/1/0434/1615/8359/files/the_basics_of_communication_research.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_off0000699c.bin
492fe89854cc0a1bf8e1347f03da9b4efad0e87503632c5b617d6ab994f8e7c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x699C 4724 bytes
font_01_sfnt_off00007a24.bin
fb2a68281eadd60210bb4b995a70d25b0a28bd488923508aba07d4bb1bf2300b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A24 5080 bytes
font_02_sfnt_off00008b4a.bin
1e0598b77403a87485a86191bbc35f81d0a1e7417830a647c332e3ebd675e87b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B4A 11148 bytes

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