Malicious PDF — malware analysis report

Static analysis result for SHA-256 99124ba2283218d7…

MALICIOUS

PDF

38.4 KB Created: 2020-09-02 14:47:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43f345995ed3555c40b0c71d41bc28e1 SHA-1: b1fe6059fda1e5fed8da954fafc0690be4919579 SHA-256: 99124ba2283218d70a97727e3e1dc575214399431327de0ccc0119a52e56fbc8
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, https://ttraff.ru/wix?keyword=iliamna+air+guides, points to known malicious redirector infrastructure. The document body appears to be obfuscated or corrupted, but the presence of the link farm and the malicious redirector strongly suggests an attempt to lure users to malicious sites, likely for phishing or malware delivery.

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=iliamna+air+guides
    • https://static.usrfiles.com/ugd/b8c837_742f67efcec24757a8a14ef10945a063.pdf
    • https://static.usrfiles.com/ugd/cbe7f7_f7042735d15b40b1b693b1970df7c77e.pdf
    • https://static.usrfiles.com/ugd/43d598_eac28cdc61b34abe9064a8b12c62a1f3.pdf
    • https://static.usrfiles.com/ugd/74e905_38adc049d5914ed0899770185fa1ad19.pdf
    • https://static.usrfiles.com/ugd/eda9ba_ef61b621baa842b0b95f753ef6584a6d.pdf
    • https://static.usrfiles.com/ugd/b8c837_c11c106f5308404e8bcecb6ab144af0b.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8359/files/45024762476.pdf
    • https://cdn.shopify.com/s/files/1/0427/9818/6652/files/4905427441.pdf
    • https://cdn.shopify.com/s/files/1/0430/6108/4322/files/crazy_frog_piano_notes.pdf
    • https://cdn.shopify.com/s/files/1/0429/7592/0282/files/south_america_map_hd.pdf
    • https://cdn.shopify.com/s/files/1/0434/4456/8216/files/walaniralosedukorixizepim.pdf
    • https://cdn.shopify.com/s/files/1/0433/9289/3093/files/zewizetokuwod.pdf
    • https://cdn.shopify.com/s/files/1/0434/3506/5505/files/minepi.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_off000059db.bin
c29cbaa744279074d2b884918569e5c369e69e8c43579c995e8bf6ab742ecf74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59DB 5080 bytes
font_01_sfnt_off00006b07.bin
4863a6df9d70f9e1e80abe9e6e83dc997c8fe8f017983db5720b17734b7c6212		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B07 10108 bytes

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