Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b479564e453baf3…

MALICIOUS

PDF

46.4 KB Created: 2020-08-17 13:17:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 480dfc7eb6da16162fffa8b862f0ebae SHA-1: 6d29543c47340233472f70c7401935214d153ac8 SHA-256: 3b479564e453baf338b3d7ec8ad95dd0742ccd0d7b90995877d6336cd3401b34
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains text related to 'carlos drummond de andrade antologia poética pdf' and the wkhtmltopdf application, suggesting a lure to disguise the malicious intent. The primary malicious URL is 'https://ttraff.com/pify?keyword=carlos+drummond+de+andrade+antologia+po%25C3%25A9tica+pdf'.

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=carlos+drummond+de+andrade+antologia+po%25C3%25A9tica+pdf
    • http://files.ameafterdark.com/uploads/1/3/1/3/131380618/jurubanev_miwuki.pdf
    • http://files.betsyleebaileymusic.com/uploads/1/3/1/4/131437552/megumina-furabi-sagoribaropir-lugeki.pdf
    • http://files.balancedlifek9.com/uploads/1/3/1/6/131606407/1625955.pdf
    • https://cdn.shopify.com/s/files/1/0453/5566/3515/files/beginner_reading_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0436/0588/5090/files/jezogizibuximolaz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lajuvifubukakevo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6299/2801/files/sonebowejotulewopotafuk.pdf
    • https://cdn.shopify.com/s/files/1/0435/0086/3643/files/7388196469.pdf
    • https://cdn.shopify.com/s/files/1/0437/7129/7943/files/wotowijapimosutazeduto.pdf
    • https://cdn.shopify.com/s/files/1/0437/1061/1605/files/83519339389.pdf
    • https://cdn.shopify.com/s/files/1/0431/6466/3967/files/booting_process_of_windows_7_step_by_step.pdf
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/honey_web_extension.pdf
    • https://cdn.shopify.com/s/files/1/0433/0677/8777/files/86093049350.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_off00007286.bin
d3aaa4cb8478a931a8199717404fc3cbd2b861c64526da3c5a45f5db065b2e17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7286 5524 bytes
font_01_sfnt_off000084f2.bin
cb51a318d816c29a475f67e8d04c5b01617a2935971b2a1b9528696c6800c133		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84F2 11544 bytes

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