Malicious PDF — malware analysis report

Static analysis result for SHA-256 296bdfe162cfe38a…

MALICIOUS

PDF

32.1 KB Created: 2020-08-15 22:03:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76057f7687b774a7bd2381b21cf98672 SHA-1: 049822a7ba67838d813a62ca0fccd613aeab6387 SHA-256: 296bdfe162cfe38a12c68d83e77d8ee53177a0d97b9358064848477d1989f8b2
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one prominently pointing to a known malicious redirector. The document body, though heavily obfuscated, also contains the URL 'https://ttraff.com/wb?keyword=identifying%20irony%20worksheet%202', suggesting a lure to a malicious site. The presence of a link farm heuristic further indicates an attempt to distribute malicious content through numerous external links.

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/wb?keyword=identifying%20irony%20worksheet%202
    • http://fotofe.servdmelbourne.com/uploads/1/3/0/7/130776760/luwavutera.pdf
    • http://files.sosdetail.com/uploads/1/3/1/4/131437724/8333707.pdf
    • http://kexej.sciencefantastic.com/uploads/1/3/1/3/131381787/2528035.pdf
    • http://files.saltydogtactical.com/uploads/1/3/1/8/131871605/76734089d599633.pdf
    • http://gawowu.nushagakfurcompany.com/uploads/1/3/1/0/131070786/4427135.pdf
    • https://cdn.shopify.com/s/files/1/0438/9850/3336/files/21202623791.pdf
    • https://cdn.shopify.com/s/files/1/0431/4942/6839/files/apsrtc_pass_application.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/9549176649.pdf
    • https://cdn.shopify.com/s/files/1/0440/6450/6006/files/beginning_spanish_workbook.pdf
    • https://cdn.shopify.com/s/files/1/0429/1713/4499/files/kevisexigovawebelo.pdf
    • https://cdn.shopify.com/s/files/1/0434/2703/7336/files/sagifijoxukanirip.pdf
    • https://cdn.shopify.com/s/files/1/0432/8787/1646/files/rirezogunab.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/marketing_innovation_definition.pdf
    • https://cdn.shopify.com/s/files/1/0434/3093/6733/files/wubazokuzegitetalukek.pdf
    • https://cdn.shopify.com/s/files/1/0431/9769/4109/files/16635817090.pdf
    • https://cdn.shopify.com/s/files/1/0439/3467/9208/files/flat_belly_diet_plan.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_off0000437f.bin
19596336202b6ca9782574d60cb7932ef4dd99d4e180552cd6ea3fc5982f8fd2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x437F 5256 bytes
font_01_sfnt_off00005576.bin
eb855d3a6ee0cf8e4178fde6e1486184f62481485fe62db51c7a052b7e0d7684		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5576 8792 bytes

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