Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e2b10f08450f5f4…

MALICIOUS

PDF

42.0 KB Created: 2020-08-17 09:42:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c41ffffba317a753f6bdf7cd5b0f54dc SHA-1: c1f8b18d3b56083478d4abce346e542a580fadbe SHA-256: 1e2b10f08450f5f47d434220a50bd55cb0567def79157df850636f2c60bd28fc
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=pdf+robotica+para+ni%25C3%25B1os'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The ML classifier also strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering via a deceptive link within the document.

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.cc/pify?keyword=pdf+robotica+para+ni%25C3%25B1os
    • http://files.theyogatreegardner.com/uploads/1/3/1/3/131398573/1231851.pdf
    • http://files.soundstonelaw.com/uploads/1/3/1/4/131438211/095dfdb0322.pdf
    • http://files.fantasticalfaces.com/uploads/1/3/0/7/130776864/fef730997ee6.pdf
    • http://files.dahliastudio.com/uploads/1/3/1/0/131070911/2017605.pdf
    • https://cdn.shopify.com/s/files/1/0438/2189/1746/files/putagidubafavero.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/employment_insurance_system_form.pdf
    • https://cdn.shopify.com/s/files/1/0429/9295/9642/files/23856962616.pdf
    • https://cdn.shopify.com/s/files/1/0429/6730/2295/files/vakunija.pdf
    • https://cdn.shopify.com/s/files/1/0429/6504/1311/files/24327048629.pdf
    • https://cdn.shopify.com/s/files/1/0437/6389/2375/files/techniques_d_amlioration_continue_en_production.pdf
    • https://cdn.shopify.com/s/files/1/0437/1342/9655/files/vudexatamizene.pdf
    • https://cdn.shopify.com/s/files/1/0431/8239/1451/files/69996932361.pdf
    • https://cdn.shopify.com/s/files/1/0433/8371/8042/files/julixuxepukuniluwadaf.pdf
    • https://cdn.shopify.com/s/files/1/0434/5180/9959/files/usga_handicap_manual.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_off00006355.bin
b727ab1d48a9dce911c37cbe73f68b78638fb7639ba55e3d6fc119665ecae128		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6355 5468 bytes
font_01_sfnt_off000075ad.bin
cb162caa3cb32ec782939632e00015745d31261ae5166e4f263734c50f91d257		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75AD 11004 bytes

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