Malicious PDF — malware analysis report

Static analysis result for SHA-256 34bd726c4b4966e6…

MALICIOUS

PDF

35.9 KB Created: 2020-08-11 19:21:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3fd9e3eb7d419ee7a949568531c98eae SHA-1: 98443de3af1b1cb83df0c6e6ceb810a3a70cd274 SHA-256: 34bd726c4b4966e61721bf9261f6ed4ca5dd8955a8ac7c7518aa4cf212723a74
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'prior authorization form pdf'. The primary malicious URL identified is https://ttraff.com/pify?keyword=prior+authorization+form+pdf, which is likely used to redirect the user to further 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.com/pify?keyword=prior+authorization+form+pdf
    • http://furad.steeplejam.co.uk/uploads/1/3/1/8/131857631/lapisam-xojolagexize-laxukolin-bazigozafaw.pdf
    • http://files.xavierlecouturiermusic.com/uploads/1/3/1/1/131164039/9371017.pdf
    • http://files.sunburstproperty.com/uploads/1/3/1/3/131398582/4e32d7c65956c.pdf
    • https://cdn.shopify.com/s/files/1/0439/6944/6046/files/christ_in_song_hymnal_sda_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/8737/1171/files/setikunemigirelanol.pdf
    • https://cdn.shopify.com/s/files/1/0433/4351/1706/files/21524526692.pdf
    • https://cdn.shopify.com/s/files/1/0438/9843/7787/files/discord_public_servers.pdf
    • https://cdn.shopify.com/s/files/1/0433/0605/7883/files/kitchen_interior_design_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0432/0532/9064/files/toguvakonasa.pdf
    • https://cdn.shopify.com/s/files/1/0452/4739/8050/files/chinua_achebe_quotes.pdf
    • https://cdn.shopify.com/s/files/1/0430/9997/9930/files/pidubow.pdf
    • https://cdn.shopify.com/s/files/1/0432/5251/4979/files/vikuxekoravena.pdf
    • https://cdn.shopify.com/s/files/1/0434/3850/6146/files/asthma_action_plan_form.pdf
    • https://cdn.shopify.com/s/files/1/0434/6878/3773/files/damage_indicators_1._8_9.pdf
    • https://cdn.shopify.com/s/files/1/0435/1731/3178/files/47630762676.pdf
    • https://cdn.shopify.com/s/files/1/0431/1161/2572/files/mivogoromo.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_off0000510c.bin
5b1dffbf1c62722531403ce71af221555644c41abe86946884c630ecfef8f13a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x510C 5124 bytes
font_01_sfnt_off00006253.bin
b77d87b395aee99e76672c841b97964efaf0fc110d8dc92fd2c0b8e9af08166f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6253 9580 bytes

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