Malicious PDF — malware analysis report

Static analysis result for SHA-256 475135e5d243390f…

MALICIOUS

PDF

37.1 KB Created: 2020-08-22 06:42:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ee1aa028b95f8a241cbe7ab27d2e4d7 SHA-1: 051211ab309033cbda8b472cfdbd3c9d075c4e81 SHA-256: 475135e5d243390fbc612166bdc5c871e42147623ffb1e0048f396ebb7263226
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is likely intended to lure the user into clicking it. The document body also contains the same URL and a call-to-action phrase, suggesting a phishing or scam attempt. The presence of a link farm further supports the malicious intent, aiming to distribute malicious content through numerous links.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=cg+police+exam+date+2018
    • http://files.tuftsprintcopy.com/uploads/1/3/1/6/131637242/d0e324.pdf
    • http://files.graywolfpestcontrol.ca/uploads/1/3/0/8/130873902/wojajejixamapokojo.pdf
    • http://xuzod.mgreenclassroom.com/uploads/1/3/2/6/132682076/8544912.pdf
    • https://cdn.shopify.com/s/files/1/0429/8889/6415/files/95801750874.pdf
    • https://cdn.shopify.com/s/files/1/0429/0537/0787/files/85236924917.pdf
    • https://cdn.shopify.com/s/files/1/0433/3420/5590/files/kupejezuke.pdf
    • https://cdn.shopify.com/s/files/1/0428/2023/9519/files/admission_form_sample_for_school.pdf
    • https://cdn.shopify.com/s/files/1/0432/8439/8246/files/12613436375.pdf
    • https://cdn.shopify.com/s/files/1/0433/2886/4409/files/dotavuzozizurewu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30547733638.pdf
    • https://cdn.shopify.com/s/files/1/0437/1477/3141/files/teripebawovajogez.pdf
    • https://cdn.shopify.com/s/files/1/0433/2670/1726/files/gavikegaza.pdf
    • https://cdn.shopify.com/s/files/1/0447/5407/5799/files/background_powerpoint_islami.pdf
    • https://cdn.shopify.com/s/files/1/0436/3363/9584/files/gidotumaxipuvogaxubo.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_off00005310.bin
d31d536f166e5b376d1f20b722fae8ad2fcbea43509304ba469cee7a3555ebc0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5310 5612 bytes
font_01_sfnt_off00006620.bin
6bd7890500b5d01b47b6474b847af25af9f2b04400e8a10feb7f160e80e6aba1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6620 9852 bytes

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