Malicious PDF — malware analysis report

Static analysis result for SHA-256 a566f6c786ba7f1d…

MALICIOUS

PDF

41.8 KB Created: 2020-08-01 19:20:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 469d0b1fa9e02f88d740f845a541d8de SHA-1: f3307548acd005605d75b6ff94a3404b26446bfb SHA-256: a566f6c786ba7f1d91b771bb229c5a2ac9a150bb6430ff2b72479852fc87221a
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=lee+county+business+license'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL, suggesting a phishing or scam attempt.

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/pify?keyword=lee+county+business+license
    • http://files.puldinauto.com/uploads/1/3/0/7/130775850/6576328.pdf
    • http://files.cintiadana.com/uploads/1/3/1/6/131636692/fonodaxe-tegori-xulabube-nagesib.pdf
    • http://files.musicinthenineties.com/uploads/1/3/1/6/131636907/wodamuxunidepunep.pdf
    • http://files.sugarloafmountainracing.com/uploads/1/3/1/6/131607075/6050407.pdf
    • http://files.katiejacksonbeautyworks.com/uploads/1/3/0/8/130813904/zojuseven.pdf
    • https://cdn.shopify.com/s/files/1/0429/7339/7145/files/40484174179.pdf
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/95899579110.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61066914906.pdf
    • https://cdn.shopify.com/s/files/1/0431/8117/9037/files/pibiduxorolewu.pdf
    • https://cdn.shopify.com/s/files/1/0433/6500/7509/files/21995249308.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5476/files/ditepopiguli.pdf
    • https://cdn.shopify.com/s/files/1/0431/1675/7153/files/55917066162.pdf
    • https://cdn.shopify.com/s/files/1/0428/3544/3871/files/nigewagowejabadibaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/6213/2897/files/91977518020.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vunazazaxukatokezidabu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8103/1064/files/zexedut.pdf
    • https://cdn.shopify.com/s/files/1/0429/9682/6273/files/botoxu.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_off000066e6.bin
031f4022ed205548b8d0f9be7e69bb1938baf5ddcbafdab4c2c261185006b7cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66E6 4668 bytes
font_01_sfnt_off000076ed.bin
edf4e65ea462f9f7cbed60c88be81e5d7433ef02c07d44777986927227c6ba07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76ED 10288 bytes

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