Malicious PDF — malware analysis report

Static analysis result for SHA-256 4558c4754d5a58f3…

MALICIOUS

PDF

49.6 KB Created: 2020-08-02 22:58:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e512bfcf451757e46a963f1680ce737 SHA-1: 28c84151da0c10a8c2936d96642fbb730b9b973e SHA-256: 4558c4754d5a58f389caf8e0f446bfc081c4508deaecdb82b172dc508301d0e6
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. The document body, though heavily obfuscated, contains the string "Petsafe 1000 manual" and the malicious URL https://ttraff.com/pify?keyword=petsafe+1000+manual. Additionally, a PDF_SEO_LINK_FARM heuristic indicates the presence of numerous embedded links, with https://cdn.shopify.com/s/files/1/0433/7978/5891/files/xirazarular.pdf being the first identified. The primary attack pattern involves luring users through deceptive content and embedded links to a redirector.

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=petsafe+1000+manual
    • http://files.inibus.co/uploads/1/3/1/4/131407227/lemugotitokopiwona.pdf
    • http://files.minsmins.org/uploads/1/3/0/7/130738823/dolawikomapejowi.pdf
    • http://files.bodenflooring.com/uploads/1/3/1/4/131453847/razonotejibujutot.pdf
    • https://cdn.shopify.com/s/files/1/0433/7978/5891/files/xirazarular.pdf
    • https://cdn.shopify.com/s/files/1/0440/9258/8184/files/86160782900.pdf
    • https://cdn.shopify.com/s/files/1/0438/4233/8981/files/79000498629.pdf
    • https://cdn.shopify.com/s/files/1/0435/7462/4419/files/dfx_audio_enhancer.pdf
    • https://cdn.shopify.com/s/files/1/0434/5777/3725/files/27515776111.pdf
    • https://cdn.shopify.com/s/files/1/0428/3603/3695/files/zolitewovovinilafaxa.pdf
    • https://cdn.shopify.com/s/files/1/0438/2969/0525/files/77914177572.pdf
    • https://cdn.shopify.com/s/files/1/0429/8424/3351/files/47498788785.pdf
    • https://cdn.shopify.com/s/files/1/0432/3934/2247/files/28913511489.pdf
    • https://cdn.shopify.com/s/files/1/0433/5871/6054/files/sudolaxiwimopeteramofu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4141/4552/files/52378737602.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_off000076a4.bin
4bbdc912310e0b31d5cf44457a36d5745fc03e12b35a8aca4bde703b9d60e258		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76A4 5012 bytes
font_01_sfnt_off000087a9.bin
2fa76e02f189cefea7a10ee47f061055eaaa6835662d9bcdeddc8427cf18dcbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87A9 15832 bytes

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