Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3e59f2219b26978…

MALICIOUS

PDF

38.5 KB Created: 2020-08-17 01:50:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 010bd4d09a1370f00befb6f580ec1b63 SHA-1: 7b3f3024a03cd585c546df8c63b673cb4c88a32d SHA-256: e3e59f2219b26978385536bfd604100c4ac4cbab7e1dfeaca75642b750d10f71
150 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, containing numerous embedded URLs. One URL, 'https://ttraff.cc/pify?keyword=flannelette+fitted+sheets+big+w', is identified as a malicious redirector. The presence of many links, including those hosted on Shopify, suggests an attempt to manipulate search engine results or distribute malicious content through a large number of seemingly benign-looking documents. No scripts were extracted, limiting the analysis of direct execution capabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=flannelette+fitted+sheets+big+w
    • http://badugimeg.vachorale.org/uploads/1/3/1/0/131070450/d7d09d91c89.pdf
    • http://files.militaryhistorylive.co.uk/uploads/1/3/1/4/131438639/6dfc67e9ee6c04.pdf
    • http://libos.loikits.com/uploads/1/3/1/6/131606636/36942379f.pdf
    • https://cdn.shopify.com/s/files/1/0433/0727/0312/files/site_handing_over_report.pdf
    • https://cdn.shopify.com/s/files/1/0431/5463/6966/files/45878430564.pdf
    • https://cdn.shopify.com/s/files/1/0433/9807/0435/files/kiriwoda.pdf
    • https://cdn.shopify.com/s/files/1/0433/8342/3126/files/jajidopi.pdf
    • https://cdn.shopify.com/s/files/1/0427/5837/3542/files/sesopapikasim.pdf
    • https://cdn.shopify.com/s/files/1/0431/3802/3581/files/zapukonoda.pdf
    • https://cdn.shopify.com/s/files/1/0431/0928/6050/files/85457451917.pdf
    • https://cdn.shopify.com/s/files/1/0432/3311/6315/files/apocalypse_now_film_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/7508/4193/files/17064859349.pdf
    • https://cdn.shopify.com/s/files/1/0433/1552/7833/files/suwunediwanuz.pdf
    • https://cdn.shopify.com/s/files/1/0443/0177/9100/files/amnesia_collection_switch_performance.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_off000058a8.bin
c973d15565bc59ce61d66cb27cd368760113b58ff5195d1c3ee5dfce4be7044b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58A8 5260 bytes
font_01_sfnt_off00006a9b.bin
dae0bcb3545d0c5a5ecc2ffcc2ed17e13df3603defacb31ef39937a36d7aa79b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A9B 10120 bytes

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