Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fecd70960126cba…

MALICIOUS

PDF

39.5 KB Created: 2020-07-28 09:24:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b639ac8344044896e5dca4225a9fdf5f SHA-1: 0762284d809faddc4f0af5e8ffcd356fddcbb818 SHA-256: 4fecd70960126cba1020ca29122447611ae64082a57de548152d763bb3fb10ea
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous links, including one pointing to a known malicious redirector (ttraff.cc). The document body, though heavily obfuscated, suggests a lure related to a book or self-help topic, aiming to trick users into clicking the malicious link. The presence of multiple Shopify-hosted PDF links further indicates a link farm or SEO manipulation tactic to distribute the malicious content.

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=quererme+mas+bernardo+stamateas+pdf
    • http://files.soaptastic.com/uploads/1/3/1/4/131406321/0e7a7f.pdf
    • http://files.ilihiamaui.com/uploads/1/3/1/3/131379514/gojana.pdf
    • http://files.plusvacationrental.com/uploads/1/3/2/6/132683357/xizibidifilana.pdf
    • http://files.intuitivesuccesscenter.com/uploads/1/3/2/6/132680933/nulemujazunojivexupi.pdf
    • http://files.plusvacationrental.com/uploads/1/3/2/6/1326
    • https://cdn.shopify.com/s/files/1/0431/6109/2245/files/tipidemul.pdf
    • https://cdn.shopify.com/s/files/1/0433/9649/7573/files/buginanogusefid.pdf
    • https://cdn.shopify.com/s/files/1/0428/7981/1750/files/70167484730.pdf
    • https://cdn.shopify.com/s/files/1/0429/3872/8611/files/zawis.pdf
    • https://cdn.shopify.com/s/files/1/0434/1478/2119/files/zojaxisevo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4951/7205/files/12854642624.pdf
    • https://cdn.shopify.com/s/files/1/0437/3574/4673/files/93202110430.pdf
    • https://cdn.shopify.com/s/files/1/0437/9744/6818/files/nagulojubirezexonud.pdf
    • https://cdn.shopify.com/s/files/1/0431/8432/4770/files/5572171283.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5602/files/kijut.pdf
    • https://cdn.shopify.com/s/files/1/0428/0333/1231/files/futupinoxotederoxewol.pdf
    • https://cdn.shopify.com/s/files/1/0430/1471/7597/files/56673219945.pdf
    • https://cdn.shopify.com/s/files/1/0430/8434/9591/files/senutesepaxar.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_off00005be4.bin
9568a69f76a9b5007e61520bee86f6c611b6ef1d5956ab955559bd02e7ee3168		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BE4 5192 bytes
font_01_sfnt_off00006d58.bin
48efe0d6682f9b507a8ff3bad127524894a0775959ee24e150a80fbb152b581d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D58 10348 bytes

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