Malicious PDF — malware analysis report

Static analysis result for SHA-256 e52ff0180785c2ab…

MALICIOUS

PDF

47.7 KB Created: 2020-08-23 08:53:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b9a5da9de0b14d28af395140cbb35887 SHA-1: ffe4e43a661560c8a14d8d07aa6a061e1c9bde0a SHA-256: e52ff0180785c2abf53a1995af944674293d907212c70f81a4ec38e021002a3a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204.001 Malicious Link T1566.002 Spearphishing Attachment

The PDF contains a prominent link disguised as a free Chrome application download, which is a common social engineering lure. This link directs to a known malicious redirector. The document also functions as a link farm, with many embedded URLs pointing to Shopify, likely to obscure the malicious intent and spread the malicious content across multiple domains. The presence of a malicious redirector and the social engineering lure strongly suggest an attempt to deliver a second-stage payload or phish for credentials.

Heuristics 4

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=chrome+application+for+pc+free
    • http://files.kbayathleticclub.com/uploads/1/3/1/4/131409009/gedojolujavavunurofa.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/befozefilofefifuxajezabu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8049/8841/files/zugagowokowi.pdf
    • https://cdn.shopify.com/s/files/1/0432/6873/5140/files/xetepe.pdf
    • https://cdn.shopify.com/s/files/1/0440/8508/4310/files/61081257909.pdf
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/wuvametinetolo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5811/8312/files/caetano_galindo.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/abbyy_transformer_plus.pdf
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/biganemufizawowivase.pdf
    • https://cdn.shopify.com/s/files/1/0429/2083/7279/files/66623572530.pdf
    • https://cdn.shopify.com/s/files/1/0432/1991/0820/files/cardo_santo_propiedades.pdf
    • https://cdn.shopify.com/s/files/1/0433/4610/0377/files/65294398384.pdf
    • https://cdn.shopify.com/s/files/1/0435/0813/8150/files/38916779295.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_off00006ef0.bin
bf659f3d5131c6d173ed6550c8389e4ec07e514f5d0116d7cefbb4a78c7e23d1
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF0 4888 bytes
font_01_sfnt_off00007f5f.bin
288d16153446fe414c5f537860fac802f10b313c2962bb19fb69bd4269b53f96
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F5F 10912 bytes
font_02_sfnt_off0000a3ce.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA3CE 4324 bytes