Malicious PDF — malware analysis report

Static analysis result for SHA-256 8880ec775a446368…

MALICIOUS

PDF

35.1 KB Created: 2020-08-26 05:04:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d8883646807eb7abaf303bc274ec6ef SHA-1: c60e17d3d6233eb4a4bba1fa493671fefeeeda6c SHA-256: 8880ec775a4463682fc0c20cdecd75d40a86cfa49da3d431440339649de3acc2
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a malicious redirector URL, disguised with text related to a 'freemotion workout routine'. The primary malicious URL, 'https://ttraff.com/pify?keyword=freemotion+workout+routine', is flagged as a redirector. The document body, though heavily obfuscated, contains this URL and other embedded URLs pointing to Shopify, likely as a distraction or to appear legitimate. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content broadly.

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/pify?keyword=freemotion+workout+routine
    • http://natuto.the-blessedseed.com/uploads/1/3/1/4/131413418/zasotizizekalagiwe.pdf
    • https://cdn.shopify.com/s/files/1/0438/4745/0789/files/10165065475.pdf
    • https://cdn.shopify.com/s/files/1/0433/0923/6374/files/zewazapedidozejiwis.pdf
    • https://cdn.shopify.com/s/files/1/0431/7279/0427/files/25277847380.pdf
    • https://cdn.shopify.com/s/files/1/0433/0212/5733/files/dofulujafepilat.pdf
    • https://cdn.shopify.com/s/files/1/0434/8048/1958/files/sphax_1._8.pdf
    • https://cdn.shopify.com/s/files/1/0429/4888/6684/files/20783715251.pdf
    • https://cdn.shopify.com/s/files/1/0428/4035/9068/files/87724112861.pdf
    • https://cdn.shopify.com/s/files/1/0437/7418/1534/files/demizimux.pdf
    • https://cdn.shopify.com/s/files/1/0433/0304/3230/files/tufixamitosuxuna.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_off00004e63.bin
2f2f031b8d0598fc25bebc80800ae51f328eabe9f2702a73eef1afa578b9d112		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E63 4524 bytes
font_01_sfnt_off00005dbc.bin
cbae89fe1d994a97578164596b768a2b5eeb928d7ad9f3a46e40ada800c6febc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DBC 10180 bytes

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