Malicious PDF — malware analysis report

Static analysis result for SHA-256 57be247f5b44d476…

MALICIOUS

PDF

45.7 KB Created: 2020-09-02 00:09:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a2cb1ad888bd8843b4d90ed8310957bf SHA-1: eec4c5d36c1f08a703495b1eab0d2cdd5eed917b SHA-256: 57be247f5b44d476015d2d16fa03f9276d537986ef27a85aefbf12921b9572fc
150 Risk Score

Malware Insights

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

The PDF was flagged for containing a malicious redirector link and a link farm. The primary malicious URL, https://ttraff.com/wix?keyword=singh+is+bling+songs++teri+ore, is likely used to lure victims. The document body, though heavily obfuscated, contains this URL and other links pointing to Shopify and static.usrfiles.com, suggesting a coordinated effort to distribute malicious content through seemingly benign PDF files.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=singh+is+bling+songs++teri+ore
    • https://cdn.shopify.com/s/files/1/0428/1594/6911/files/sisibixebokudevimi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9289/3095/files/72551689599.pdf
    • https://cdn.shopify.com/s/files/1/0432/0267/4845/files/78511565791.pdf
    • https://static.usrfiles.com/ugd/b8c837_5d05a729c1dd4c169673ba417321a4ac.pdf
    • https://static.usrfiles.com/ugd/b8c837_00b3d5b5938c44d1b04ac96dc5199399.pdf
    • https://static.usrfiles.com/ugd/b8c837_7a738565c1c94c32b843e4d9c72a536d.pdf
    • https://static.usrfiles.com/ugd/e5a943_e4701502e29c4fa1a5c4900ed9ee62fd.pdf
    • https://static.usrfiles.com/ugd/24deb6_5ed55d0b527840cea5bd023e4c591c43.pdf
    • https://static.usrfiles.com/ugd/805d2a_095c6f3fc7c14b958f2bde69cc745de1.pdf
    • https://static.usrfiles.com/ugd/f515ca_b9c44babacdc44aea08ff813e2c58218.pdf
    • https://cdn.shopify.com/s/files/1/0432/4684/6107/files/dobaremedamijofonuvanaf.pdf
    • https://cdn.shopify.com/s/files/1/0428/3262/5831/files/play_music_in_discord.pdf
    • https://cdn.shopify.com/s/files/1/0436/7620/5209/files/the_diary_of_anne_frank_quiz_and_answers.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_off000061ee.bin
83cb7a64653e35561c52252c9ef9d53bdf4c37d93c39a45e21113284a6fb02d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61EE 4980 bytes
font_01_sfnt_off000072d6.bin
c60397955a9ff150707287ef5dd61ac728249877d0af8e2993931f8fdc157447		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72D6 9876 bytes
font_02_sfnt_off000094d9.bin
e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94D9 16164 bytes

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