Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fc6148ebe10e1e2…

MALICIOUS

PDF

42.3 KB Created: 2020-09-21 02:20:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b205d2e8af8f063c15769bc2c2cb76d SHA-1: 728f4ab479fe90ec2c60c60dd6091219d99a7fc8 SHA-256: 3fc6148ebe10e1e222bd6d1090e861fe10dcb8d6a3db0b2462377f78763ae8e0
60 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link. The embedded URL points to 'ttraff.ru', which is known for malicious redirection. The document body, though heavily obfuscated, contains text related to 'chemistry worksheet significant figures and scientific notation answers', suggesting a lure to trick users into clicking the malicious link. No scripts were extracted from this sample.

Heuristics 2

  • 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.
  • 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/wix?keyword=chemistry+worksheet+significant+figures+and+scientific+notation+answers
    • https://6f0bea94-ee82-45ba-961d-6b351c5459d2.filesusr.com/ugd/b5472a_6bc946e07b8d47e8b1ddf4533957cb38.pdf?index=true
    • https://201d74b7-27ff-4b14-a508-aede978ef638.filesusr.com/ugd/361f4b_db05ddeea44c42b08e7654dd51cf0a21.pdf?index=true
    • https://705a24cd-af7c-4ee6-907f-86f42df46b8d.filesusr.com/ugd/87a178_4c2b3168aad84f7695253c795a7e732c.pdf?index=true
    • https://d3ffe3c3-758b-4cf2-bfc8-994f81a78af3.filesusr.com/ugd/0d002d_f5c43033d26941ad875cdf1e8dd38441.pdf?index=true
    • https://522de85e-4b7a-43db-8fef-71a0f2e4bccf.filesusr.com/ugd/d90490_cd67c2c8b35a4bbcb9934110b8f88a13.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0429/6779/3820/files/frozen_shoulder_treatment_exercise.pdf
    • https://cdn.shopify.com/s/files/1/0438/5266/0901/files/gerefonofutalugebo.pdf
    • https://82fec4b8-30fd-4e24-bad7-e642b51b3140.filesusr.com/ugd/9c58c5_6ba74dd5e3ff43e08525f5a57da8a706.pdf?index=true
    • https://25ddf095-22da-4642-a4de-0c08861557ea.filesusr.com/ugd/eeb7bd_dba9f72a61304b06b871c96feab5002f.pdf?index=true
    • 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_off00005831.bin
afcebfe132add2ec20e65e9f40d19c61b6ca949c7a9d8ad18ce03fa1486c055e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5831 5564 bytes
font_01_sfnt_off00006b0d.bin
ec3a64c3bff905be28451a7f25ed2b8842069c1c88c338e36b77689d15d4010d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B0D 9560 bytes
font_02_sfnt_off00008baf.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BAF 4324 bytes

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