Malicious PDF — malware analysis report

Static analysis result for SHA-256 e74be8bfcd882c32…

MALICIOUS

PDF

42.6 KB Created: 2020-08-04 07:27:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c342a01b112b68770a7c8fe355c5990 SHA-1: 765cb9465ca0bdc977f2d98afb0ba1ea674d5bb8 SHA-256: e74be8bfcd882c32d2c8499939391ad31f6d67abe43feb6a71c640bc5cfb6659
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely used to distribute further malicious content. The document body and embedded links suggest a lure related to 'basic trauma life support' to entice users to click the malicious URL. The PDF also functions as a link farm, pointing to numerous other PDFs hosted on Shopify, likely for SEO manipulation or to obscure the primary malicious destination.

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.ru/wb?keyword=basic%20trauma%20life%20support%20pdf%20indonesia
    • http://files.mrswittmath.com/uploads/1/3/1/4/131437848/widasekikig_milegafisobo_pidenuk_noxoluxa.pdf
    • http://files.gdinteriors.ca/uploads/1/3/0/7/130775384/7588314.pdf
    • http://files.dcmu.org/uploads/1/3/1/3/131380308/xuletaxuwi.pdf
    • https://cdn.shopify.com/s/files/1/0438/1645/2258/files/50725209077.pdf
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/90617143187.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xifenawapuvesuf.pdf
    • https://cdn.shopify.com/s/files/1/0436/9262/1978/files/vuzijusugigipa.pdf
    • https://cdn.shopify.com/s/files/1/0428/2348/3548/files/98379687692.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30549310566.pdf
    • https://cdn.shopify.com/s/files/1/0431/3110/9540/files/tuloroserikevoda.pdf
    • https://cdn.shopify.com/s/files/1/0429/3305/9737/files/33719409398.pdf
    • https://cdn.shopify.com/s/files/1/0439/2720/8091/files/80484121989.pdf
    • https://cdn.shopify.com/s/files/1/0435/6286/0699/files/inverse_kinematics_unity.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a19.bin
087afa5cef6d617d31bf0c7a7c7278dc066b7ea34545a5d5ee4f39597d70eef1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A19 5232 bytes
font_01_sfnt_off00006bbe.bin
f226fbf74ae7e9db2a8f623dc08599a98333d6916c4c0f5a1ba768be8d3cc53b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BBE 10444 bytes
font_02_sfnt_off00008f76.bin
ad623bc7c681097dfa1224999cf6cc6072d3ca9a137655dc1129b0261f0b357c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F76 4324 bytes

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