Malicious PDF — malware analysis report

Static analysis result for SHA-256 7224e2f7536e01f7…

MALICIOUS

PDF

55.0 KB Created: 2020-08-29 07:42:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c4a3ef2e92a944a2520e5b6257cbd86b SHA-1: b27ad4c5f1a3240347af73184bb109b0ffa1cc31 SHA-256: 7224e2f7536e01f78e2488e2d9ad45f7b00f47087910ddef026e0113120192f1
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a redirector URL, which is a strong indicator of malicious intent, likely to distribute malware. The document body, though heavily obfuscated, contains text related to downloading 'Football manager 2014' and the malicious URL, suggesting a lure for software piracy or malware distribution. The presence of numerous embedded links, many pointing to benign files, alongside the malicious redirector, indicates a link farm designed to obscure the true malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/wix?keyword=football+manager+2014+nosteam+downlo
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_9b0baae31ebb478ab4b0076d79f0c987.pdf
    • https://static.usrfiles.com/ugd/b8c837_56dd455462e7419abe3af69b4c9d6f31.pdf
    • https://static.usrfiles.com/ugd/b8c837_0dc1336726054f349b40800e96c1f49e.pdf
    • https://cdn.shopify.com/s/files/1/0430/2805/4169/files/58090488941.pdf
    • https://cdn.shopify.com/s/files/1/0430/6878/4791/files/alphabet_phontique_otan.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89377355024.pdf
    • https://cdn.shopify.com/s/files/1/0432/0896/6301/files/calculus_of_variations_problems_and_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0434/0989/9670/files/82251333793.pdf
    • https://static.usrfiles.com/ugd/b8c837_d0c90cec36e9447080397cc238479b82.pdf
    • https://static.usrfiles.com/ugd/b8c837_33e1cc63d4504eafa87113d5abcd29bb.pdf
    • https://static.usrfiles.com/ugd/b8c837_0e07668e1ce740638d2bf153e34a7753.pdf
    • https://static.usrfiles.com/ugd/b8c837_382c5c9a622a467fadc8dcbf70f289d4.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060b3.bin
de302e023419b6cce0a558ca3b8799a1ee3f49610fba90f4fc567f0c320ae54b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60B3 10552 bytes
font_01_sfnt_off0000834e.bin
a7ce0e1cd4bc70bff2945c74804179327f071ae6c7e818ffcba849761c0f2ce0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x834E 5744 bytes
font_02_sfnt_off000096dc.bin
24a5456983af0f5c4b6de6e1f2dbe637774060471ef5866333413c9867139a30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96DC 19052 bytes

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