Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4d5ee4f939400c6…

MALICIOUS

PDF

49.5 KB Created: 2020-07-28 04:06:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f9aaf70a5b6e2ac5bfce4963a623eb3 SHA-1: ef468a93dfc87009548a778319942aeef27584b4 SHA-256: a4d5ee4f939400c6c7178f841afad22823fb8f0a8644549df02a3ff0cd538139
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to a 'scanner manual'. The presence of a QR code lure heuristic further supports a phishing or redirection-based attack. The file is identified as a PDF, and heuristics indicate it's designed to redirect users to malicious sites.

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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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=cipherlab+1560p+scanner+manual
    • http://files.stivesharbourview.com/uploads/1/3/1/4/131483143/weruzaga.pdf
    • http://files.arttherapyderby.com/uploads/1/3/0/7/130774990/gepus.pdf
    • http://files.the-kitchenplace.com/uploads/1/3/0/9/130969772/3218306.pdf
    • https://cdn.shopify.com/s/files/1/0429/2889/8211/files/88623121027.pdf
    • https://cdn.shopify.com/s/files/1/0432/1234/1416/files/12283119194.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/62374455636.pdf
    • https://cdn.shopify.com/s/files/1/0431/7783/6702/files/turesidefonewag.pdf
    • https://cdn.shopify.com/s/files/1/0430/7746/8327/files/bafukurotubuxusaluvufos.pdf
    • https://cdn.shopify.com/s/files/1/0431/6325/4944/files/xenutebadaluderava.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/6819160869.pdf
    • https://cdn.shopify.com/s/files/1/0431/3314/1149/files/kifirizigomorolewofovix.pdf
    • https://cdn.shopify.com/s/files/1/0428/2253/3276/files/dudevaluwa.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_off000079f8.bin
d827e09304dfa0cfad62239500fd7b1626d11567e9c4f486bfbd8954d8570ff1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79F8 5500 bytes
font_01_sfnt_off00008c70.bin
6bc1271f3e27976f4a9ffcf6ac828fa31ca048e2abb08757b345285c2b04555c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C70 14412 bytes

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