Malicious PDF — malware analysis report

Static analysis result for SHA-256 405506d9fa5504f5…

MALICIOUS

PDF

85.5 KB Created: 2020-09-08 09:08:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01573eee9a737a93a98cd982ed96daed SHA-1: 152c22a24c9e153c9c038a497b19899a9224f37f SHA-256: 405506d9fa5504f5716fc83ceb6322d609a0c1d5de26e455a46863927d1f5548
150 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains the same URL. The presence of a link farm suggests an attempt to artificially inflate search engine rankings or distribute malicious content through a large number of seemingly benign PDFs.

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/wix?keyword=flask+template+loop+dictionary
    • https://static.usrfiles.com/ugd/3be3a7_14277b72aecd457f8b98c33fe46f5ec1.pdf
    • https://static.usrfiles.com/ugd/003b86_6b059fb89324428fac58c8b9c8ca3f8d.pdf
    • https://static.usrfiles.com/ugd/0adedf_90b355e6c6f5424e8f26c6b4b58407f0.pdf
    • https://static.usrfiles.com/ugd/87ad98_57adbfb3d1ac4b148070bdd9841c9a0c.pdf
    • https://static.usrfiles.com/ugd/6dcf04_7bdc4abcfb9d4f7db6af7ae1a2fc9459.pdf
    • https://cdn.shopify.com/s/files/1/0434/1907/4712/files/steel_roofing_sheets_sheffield.pdf
    • https://cdn.shopify.com/s/files/1/0433/3810/4985/files/traduction_document_anglais_francais_gratuit_en_ligne.pdf
    • https://cdn.shopify.com/s/files/1/0441/2515/9576/files/78452584231.pdf
    • https://cdn.shopify.com/s/files/1/0437/4839/3112/files/oxidative_stress_and_aging.pdf
    • https://cdn.shopify.com/s/files/1/0431/5506/2948/files/sadidovovabibelafixapo.pdf
    • https://cdn.shopify.com/s/files/1/0435/9539/9325/files/43629977295.pdf
    • https://cdn.shopify.com/s/files/1/0439/7613/0718/files/business_canvas_model_example.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_off00010439.bin
3768538200ff1efa8cb240c2ba975a1ab52696a73129726829e99ead9c9d817b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10439 5340 bytes
font_01_sfnt_off0001165a.bin
521bb4af4db4b172775760e1c01ba6b758c69dcb2e597a4d0633fa07ce66325b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1165A 16100 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.