Malicious PDF — malware analysis report

Static analysis result for SHA-256 50548622ef6c8e7f…

MALICIOUS

PDF

43.0 KB Created: 2020-09-02 13:21:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51ddeb861d1e527325b0b3a6cced3d2a SHA-1: e87210bd473ff6bb42d0a069e4b47aa72b729895 SHA-256: 50548622ef6c8e7fc2cb860017c4766b0fc945eeee87c609cbf5199205e043d0
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.link/pify?keyword=alanis+2017+movie+free', likely leads to a malicious site. The document also contains a PDF link farm heuristic, indicating it's designed to host numerous external links, many of which point to Shopify domains, likely for SEO manipulation or to obscure the primary malicious destination. The presence of multiple PDF links suggests a campaign to distribute malicious content through search engine optimization.

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.link/pify?keyword=alanis+2017+movie+free
    • https://cdn.shopify.com/s/files/1/0429/7916/4314/files/85482883606.pdf
    • https://cdn.shopify.com/s/files/1/0433/0497/6548/files/muxutesedusewuxurazesurad.pdf
    • https://cdn.shopify.com/s/files/1/0437/7051/1521/files/baby_sinhala_songs.pdf
    • https://cdn.shopify.com/s/files/1/0432/7122/5494/files/kexer.pdf
    • https://cdn.shopify.com/s/files/1/0430/8585/6919/files/rivuvepabasofalenudo.pdf
    • https://cdn.shopify.com/s/files/1/0429/2250/8447/files/72331048525.pdf
    • https://cdn.shopify.com/s/files/1/0430/6075/6641/files/87413692676.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53607129813.pdf
    • https://static.usrfiles.com/ugd/253000_0ec63e7391ed44f8b3fa2e3bf1fb83e3.pdf
    • https://static.usrfiles.com/ugd/510a18_017511eb519e4c0da1b93536c5409586.pdf
    • https://static.usrfiles.com/ugd/3d0627_5586f62352a34967bf239a2bed4002cc.pdf
    • https://static.usrfiles.com/ugd/b8c837_38c043821084448fb437f6f658a03275.pdf
    • https://static.usrfiles.com/ugd/b8c837_3b469bc7ffd8453a8526982b3674e4be.pdf
    • https://static.usrfiles.com/ugd/b916f4_ec588c0d7b234a88ad77c53cd4e5579c.pdf
    • https://static.usrfiles.com/ugd/b8c837_bcf8ae4208574a229b816d0d778b054c.pdf
    • https://static.usrfiles.com/ugd/e3834b_50a8ab54ff1c40a6b329962868fd0c07.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_off00004f3e.bin
882ceb934e32d44187585729194983e207b1a17f0802f51e0530c486ec02c5d2
pdf-font-stream PDF embedded font (sfnt) at offset 0x4F3E 7808 bytes
font_01_sfnt_off00006a0d.bin
4d1c9931d5b3967fe5e2cfca4c2967b294e6d4a19d848c3bb0cb36806f4c6432
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A0D 5368 bytes
font_02_sfnt_off00007c50.bin
796c8111895e4e1dc072eb95e518d8a4be9a4295f7597f540fa0365d9b15acd5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C50 10240 bytes