Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d94ed549218b793…

MALICIOUS

PDF

32.2 KB Created: 2020-08-28 23:42:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d7b09bb84fce645a69f91319fab3557 SHA-1: 056030da09b263b924e0815df65406ef38e9c348 SHA-256: 6d94ed549218b793d463db1ab21156432f6c854d50ba2f3640b9d88d523eea2e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged as malicious by a machine learning classifier and contains numerous embedded links. One of these links, 'https://ttraff.com/wix?keyword=philippe+fonck+ciob', points to known malicious redirector infrastructure. The presence of a link farm suggests an attempt to manipulate search engine results or redirect users to malicious content.

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/wix?keyword=philippe+fonck+ciob
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_3a08abdde3d64b1598a162903453a622.pdf
    • https://static.usrfiles.com/ugd/b8c837_9dedc56197484533b1324d7af58c9926.pdf
    • https://static.usrfiles.com/ugd/b8c837_3bc19c4b22e94fb09da987312d9a7df4.pdf
    • https://static.usrfiles.com/ugd/b8c837_1a1696d41ac94ba9a488f2d11346b43b.pdf
    • https://static.usrfiles.com/ugd/b8c837_f60e6bf37bba49bab33a35556f3a8162.pdf
    • https://static.usrfiles.com/ugd/b8c837_0e48e6ace5ee48cfb4859bc2255ecf25.pdf
    • https://static.usrfiles.com/ugd/b8c837_acbe67c5670a45ecb7dbe5837abaf431.pdf
    • https://static.usrfiles.com/ugd/b8c837_7e6b4f78c61047bbb36f3180580c07c0.pdf
    • https://static.usrfiles.com/ugd/b8c837_9ff37e4a526f42fd805e670bfd6c74ac.pdf
    • https://cdn.shopify.com/s/files/1/0428/0965/5462/files/8012489494.pdf
    • https://cdn.shopify.com/s/files/1/0437/1290/5370/files/nurepawitazawiwadumenixer.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004096.bin
4b8b0c78c3b5bf958c2f80f5915edfd456abed37915b3ccdaad3a5ed5eba86fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4096 4824 bytes
font_01_sfnt_off000050fa.bin
1ef3eafd282207faac03c65034dcd4cd9d0ea3d938d9d34c666561ebcae1df77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50FA 10960 bytes

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