Malicious PDF — malware analysis report

Static analysis result for SHA-256 d76676683a69f3f9…

MALICIOUS

PDF

47.0 KB Created: 2020-08-07 14:55:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81a57a3e43e7a4e2e81af852e273db29 SHA-1: c66067f7c5430216a956a945cc33552526a0cefc SHA-256: d76676683a69f3f9e60f1150cf56c48c54f4a067e1b8af04717aa30fefc8b00b
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one pointing to a known malicious redirector. The document body is heavily obfuscated but contains a URL that matches the redirector. The presence of numerous links suggests an attempt to lure users to malicious sites, potentially for phishing or malware distribution.

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=clasificacion+bethesda+papanicolau+pdf
    • http://pexosovux.juliesstory.org/uploads/1/3/2/8/132815002/2373444.pdf
    • http://pavutato.thebarkinglotri.com/uploads/1/3/1/4/131454065/7572e96e3088dcd.pdf
    • http://files.desjun.com/uploads/1/3/0/7/130740521/5ab6199040.pdf
    • http://files.tendertouchah.com/uploads/1/3/0/9/130969368/xivux.pdf
    • http://files.otterponds.ca/uploads/1/3/0/7/130776058/gugipuvudut.pdf
    • https://cdn.shopify.com/s/files/1/0434/5597/1492/files/35189949567.pdf
    • https://cdn.shopify.com/s/files/1/0432/6585/1542/files/fixinolenit.pdf
    • https://cdn.shopify.com/s/files/1/0431/3533/6605/files/34336841488.pdf
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/xiwivofixikov.pdf
    • https://cdn.shopify.com/s/files/1/0437/4816/3733/files/24308374223.pdf
    • https://cdn.shopify.com/s/files/1/0429/1470/9663/files/31956045750.pdf
    • https://cdn.shopify.com/s/files/1/0434/8795/3053/files/83180442818.pdf
    • https://cdn.shopify.com/s/files/1/0436/9884/7894/files/13818633719.pdf
    • https://cdn.shopify.com/s/files/1/0432/2128/7080/files/73125469794.pdf
    • https://cdn.shopify.com/s/files/1/0450/1661/3014/files/unified_hud_project_uhud_v3._7.pdf
    • https://cdn.shopify.com/s/files/1/0428/1411/1903/files/kejiboxipixojolon.pdf
    • https://cdn.shopify.com/s/files/1/0435/6951/2607/files/35434604635.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_off0000799e.bin
d3ee9264684a4a2ed73c26b7ef068fc00c0e271fcc933113ed96093884c09a5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x799E 5192 bytes
font_01_sfnt_off00008b3e.bin
08b90413a04f13948cbe80684e49511614c543029c5baa2ddfbbdc50308b96c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B3E 10548 bytes

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