Malicious PDF — malware analysis report

Static analysis result for SHA-256 2557d52839a43a31…

MALICIOUS

PDF

42.9 KB Created: 2020-08-03 10:44:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fedc92137d507a0e59514a40a7eb0204 SHA-1: f0a77e43800fe25d38f62f16179d50c0ff2ab8d3 SHA-256: 2557d52839a43a319c287824e73643ceb8daca031f2277e10cb1c16833734449
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a search result for a 'black and decker toaster oven manual'. This suggests a phishing or scam attempt to lure users to malicious content. The document body, though heavily obfuscated, also contains the same URL. The PDF also contains a link farm of other PDFs hosted on Shopify, likely for SEO manipulation to improve the ranking of the malicious content.

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.ru/pify?keyword=black+and+decker+toaster+oven+manual
    • http://files.globalmarinemedia.com/uploads/1/3/2/6/132680808/wagulujiwinep.pdf
    • http://files.skynstyle.com/uploads/1/3/2/3/132303351/4178851.pdf
    • http://files.flavorsbakery.com/uploads/1/3/1/4/131437984/67cd5e08beb04b8.pdf
    • https://cdn.shopify.com/s/files/1/0430/7510/9013/files/90002640237.pdf
    • https://cdn.shopify.com/s/files/1/0429/7634/6266/files/reriravudokemefojuvoniv.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/radeziwiwilajumigetadad.pdf
    • https://cdn.shopify.com/s/files/1/0433/6667/8686/files/pegupevoji.pdf
    • https://cdn.shopify.com/s/files/1/0431/4290/6007/files/dozixizadezapebivowegos.pdf
    • https://cdn.shopify.com/s/files/1/0436/2944/5273/files/48297249406.pdf
    • https://cdn.shopify.com/s/files/1/0437/6320/4253/files/34943206190.pdf
    • https://cdn.shopify.com/s/files/1/0431/8360/3876/files/simunotasawonu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7741/8656/files/87153772150.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rinajimakonewob.pdf
    • https://cdn.shopify.com/s/files/1/0431/6508/9941/files/81453143898.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_off00006ac9.bin
cf1455271e4ccc9c31fc1bda6d6eceebe4ea5e4f7ad1f320c74f15ac598dd0fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC9 5256 bytes
font_01_sfnt_off00007c9b.bin
f4d3ad39391c8690ee23503b1fffc1000d62c9b8685d9112cbfdf930e8db9a72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C9B 10028 bytes

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