Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f0a8912a01e6a5a…

MALICIOUS

PDF

56.3 KB Created: 2020-08-11 05:11:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4715fb02531fad798230c418994b251c SHA-1: 32d553a9436e7a694914f48fce1a969521eb0129 SHA-256: 6f0a8912a01e6a5ab8314bc4ea2c55adf234d5014c2067b7378211916ad6e87d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains a URL that matches the redirector. This suggests the PDF is designed to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=the+passion+of+perpetua+and+felicitas+pdf In PDF document text
    • http://files.gisdcte.com/uploads/1/3/2/6/132681880/739f8.pdfIn PDF document text
    • http://files.centralsaanichseniorscentre.org/uploads/1/3/2/6/132681916/1495913.pdfIn PDF document text
    • http://files.elinatinsky.com/uploads/1/3/0/9/130969440/disulovo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2995/4721/files/47222696363.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sujaxitedidubabupopivup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1745/3211/files/domelefupegusamojof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0369/9615/files/lelofitup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5555/2414/files/zudemenewepejoxevogigaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4164/3928/files/rakonefoti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7118/2750/files/teges.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0903/7720/files/fallout_76_adrenal_reaction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8510/2237/files/introduction_to_applied_math.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7192/1571/files/demuvatopom.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009b46.bin
d7f29ec0f035cade8c1df6758826ffaf3fd7101a5de40946ccc1e29777379006		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B46 5192 bytes
font_01_sfnt_off0000acdd.bin
46f523651dcb29b52f76889ad85412b11f1dca35d3e44a2114596080321a0203		 pdf-font-stream PDF embedded font (sfnt) at offset 0xACDD 11944 bytes

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