Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdd73523a30761b1…

MALICIOUS

PDF

50.5 KB Created: 2020-09-01 23:36:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e97f2abb4c9c61e261b3b2f81899053 SHA-1: c1cc7721668a634c185a3ac88779cb79f6ea8646 SHA-256: fdd73523a30761b137948843ffe5b24cbe01d98ccfb15a26f7fa8eb2517dc313
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link farm designed to redirect users to malicious infrastructure. The primary malicious URL identified is ttraff.ru, which is used in conjunction with keywords suggesting a lure for templates. The document body, though heavily obfuscated, contains references to the malicious URL and other benign-looking PDF links, likely part of a SEO poisoning or link farm 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.ru/wix?keyword=excel+dashboard+templates+speedometer
    • https://static.usrfiles.com/ugd/9c0842_d1e030e1cb9e482b826b0c00e144635c.pdf
    • https://static.usrfiles.com/ugd/ec0c41_718625b51408485b84b98d85c1eb0b43.pdf
    • https://static.usrfiles.com/ugd/3bca44_5e1a23c9915845feb80539fa5fd77f88.pdf
    • https://static.usrfiles.com/ugd/f5892c_cf9cd48e722641e2820240277d6f38a2.pdf
    • https://static.usrfiles.com/ugd/b8c837_042ded1c11234268b377a95cc34b3e07.pdf
    • https://static.usrfiles.com/ugd/9e41f0_222a088394d9417d9d6d1f7bd2032b98.pdf
    • https://static.usrfiles.com/ugd/e481ce_378569a03ccb4c3b9acf3843d4c4d4f0.pdf
    • https://static.usrfiles.com/ugd/4b7290_7f36d18960f44dc897078d96ea2a9c31.pdf
    • https://static.usrfiles.com/ugd/0d2908_402b4eb42f9540298b77d7c23a00afa0.pdf
    • https://static.usrfiles.com/ugd/a2ebd8_4d88d5b935e5472b9ccaac8ac3655e0d.pdf
    • https://static.usrfiles.com/ugd/b8c837_99ad1b897190417794d4720556388221.pdf
    • https://static.usrfiles.com/ugd/b8c837_38493757649841c7a5b34681288a6b9c.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_off00007185.bin
27dc26fe485a3aa6944f51e034be16722dce4163b8db9835ec25be1127c78db6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7185 5476 bytes
font_01_sfnt_off000083f7.bin
c8f96535b39696e2c02523a140f3c8c4001a45290e652e6cd60eb050fe4b11be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83F7 10352 bytes
font_02_sfnt_off0000a784.bin
b2cbfceaf44fc4a56d1321c5677f125dfbde6a5f8c873b6a17361dd7c2aa5302		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA784 16232 bytes

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