Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af06d73a0983113…

MALICIOUS

PDF

54.1 KB Created: 2020-08-31 22:00:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4bea8b37e5164f2a49450eb64398a552 SHA-1: e14c917a7776362f4426faed3fcc1fdd5fac7758 SHA-256: 4af06d73a0983113409c1267fd9d9a6eb010f3ce329b23ba90633b2a65401eec
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a PDF SEO Link Farm. One of these links, https://ttraff.com/wix?keyword=undead+warrior+leveling+guide+classic, is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to contain text related to game guides, suggesting a lure to entice users to click the malicious links.

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.com/wix?keyword=undead+warrior+leveling+guide+classic
    • https://static.usrfiles.com/ugd/5fd5c1_2be9799192bc4c089db5537af78a1380.pdf
    • https://static.usrfiles.com/ugd/b8c837_93fe84e100b6477d969d195a3613f412.pdf
    • https://static.usrfiles.com/ugd/834936_d2692a7626194ba3a6a59a9cbb3a2c04.pdf
    • https://static.usrfiles.com/ugd/270e53_c2bb65f10f094572a494a49800eb7cd6.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xatet.pdf
    • https://static.usrfiles.com/ugd/5ed537_074c4018314c49ceb388e682aee059c4.pdf
    • https://static.usrfiles.com/ugd/f0e51d_337be259323f44acaf6103337d143c9e.pdf
    • https://static.usrfiles.com/ugd/b8c837_a406e4a95a05465a9de242793e226551.pdf
    • https://static.usrfiles.com/ugd/7f929b_1f49fd16dff04088a10ba71bcc8d1d89.pdf
    • https://static.usrfiles.com/ugd/19ce5d_8154576fdc444b0a9a18a45a1a1f7e1e.pdf
    • https://static.usrfiles.com/ugd/b8c837_4aa44fe6dadf4609a2de533ece898a5c.pdf
    • https://static.usrfiles.com/ugd/b8c837_d2cebcae217b434ea6de0aeef9b1e0b3.pdf
    • https://static.usrfiles.com/ugd/b8c837_e7273b7c71ec4c0b95ebea59f1d08325.pdf
    • https://static.usrfiles.com/ugd/b8c837_313294f36f494534b0edf1813c446110.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_off0000876b.bin
d6f908ba8f3428eba542f11a80ba6545221fe07a2f7a24da8ef07d7f209cc669		 pdf-font-stream PDF embedded font (sfnt) at offset 0x876B 5052 bytes
font_01_sfnt_off000098b3.bin
d8b888d8621fd90018fb30de5250728161013dfbacf200cbb514d4245f0cf078		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98B3 10704 bytes
font_02_sfnt_off0000bd06.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBD06 4324 bytes

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