Malicious PDF — malware analysis report

Static analysis result for SHA-256 f10812bce4da9411…

MALICIOUS

PDF

46.6 KB Created: 2020-07-30 15:27:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70bf37769ea412a44d5641ec23aa64ff SHA-1: 9c83e293722f12026f7320d8f323e32e005cd19f SHA-256: f10812bce4da94113953ac13ca6130c1720e9bc954fa3a97d1a42a5ed3b04d26
120 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious domain, ttraff.com. The document body, though heavily obfuscated, appears to be a lure related to 'advantages and disadvantages of city life pdf'. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious 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=advantages+and+disadvantages+of+city+life+pdf
    • http://files.vycareer.org/uploads/1/3/2/3/132303175/600f35093c0448.pdf
    • http://files.amurielyoga.com/uploads/1/3/1/0/131070207/tosugaxowe-bokuwekob-motaradagiko.pdf
    • http://files.prettiesandcompany.com/uploads/1/3/0/7/130775834/kilolaluzideluper.pdf
    • http://files.mbhealingtao.com/uploads/1/3/1/0/131070230/senekig.pdf
    • http://files.luxtan.lu/uploads/1/3/0/7/130775583/12ebd716.pdf
    • http://files.luxtan.lu/uploads/
    • https://cdn.shopify.com/s/files/1/0434/1858/3192/files/76477959507.pdf
    • https://cdn.shopify.com/s/files/1/0430/6318/1463/files/18296079216.pdf
    • https://cdn.shopify.com/s/files/1/0438/0937/4365/files/tijusagurexutig.pdf
    • https://cdn.shopify.com/s/files/1/0440/6630/8246/files/gitajulutis.pdf
    • https://cdn.shopify.com/s/files/1/0434/2094/2486/files/gujagurejukemi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8868/2915/files/961900536.pdf
    • https://cdn.shopify.com/s/files/1/0429/4744/4899/files/53192142743.pdf
    • https://cdn.shopify.com/s/files/1/0434/8418/4728/files/dotumewujikujizakubegup.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/3789128943.pdf
    • https://cdn.shopify.com/s/files/1/0432/8249/7701/files/66160441519.pdf
    • https://cdn.shopify.com/s/files/1/0432/9386/8187/files/81973023232.pdf
    • https://cdn.shopify.com/s/files/1/0432/6827/6384/files/tikiw.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_off000077e8.bin
defac4fc2cfcddc7639a9c8b8ee16717788987f0e7161ff56eb77d2a5045a478		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77E8 5168 bytes
font_01_sfnt_off000089a1.bin
116cd4487843192d1488df9fc5439e0482b23c8c2161491e28ac2a424467ab41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89A1 10312 bytes

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