Malicious PDF — malware analysis report

Static analysis result for SHA-256 5677649561e75227…

MALICIOUS

PDF

61.2 KB Created: 2020-08-15 08:29:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86f55bf02fe4b80e5744fc4afd505fd6 SHA-1: cb7f239d9adbe0128d50af1561b973d18e1e5273 SHA-256: 5677649561e752271937af42b5149d4ccd9370474a07ebd19a5aa59845df3b87
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with 22 identified as part of a link farm. One critical heuristic indicates these links point to known malicious redirector infrastructure, specifically 'ttraff.ru'. The document body, though heavily obfuscated, also contains the URL 'https://ttraff.ru/pify?keyword=baal+veer+1101', suggesting a lure to a malicious site. The primary purpose appears to be redirecting users to potentially harmful content.

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=baal+veer+1101
    • http://files.kftstudio.com/uploads/1/3/1/4/131406173/dekajanowes-poxexen-pepokujosage-joxemarun.pdf
    • http://vokas.simplybebodywork.com/uploads/1/3/0/7/130739220/pirawitidovapawar.pdf
    • https://cdn.shopify.com/s/files/1/0431/1616/7328/files/witejaguzotarokakagaba.pdf
    • https://cdn.shopify.com/s/files/1/0430/5253/1869/files/candy_convert_to_word.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/19085525902.pdf
    • https://cdn.shopify.com/s/files/1/0448/2659/1389/files/shoulder_bodyweight_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0429/0222/5059/files/90401958486.pdf
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/jaginejomor.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/adestramento_de_caes_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0434/6878/3773/files/spherical_bessel_function.pdf
    • https://cdn.shopify.com/s/files/1/0429/9443/4207/files/24782631357.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_off00009d26.bin
68bb29d644b1306af2cac25496603eae14a03dd877bcb8db3ffaaec628c74653		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D26 4804 bytes
font_01_sfnt_off0000ad90.bin
5aa4dfb5a6a8eb63b2fcbf03fee2bfb025630b368500e135151ca72abc3e50a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD90 14908 bytes
font_02_sfnt_off0000dc44.bin
7a3f2914fe1230d2bccafac758a75bdd661a5aee49f810e2f3d5ded7ecbd7a1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC44 2916 bytes

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