Malicious PDF — malware analysis report

Static analysis result for SHA-256 46be6f958f2c98bd…

MALICIOUS

PDF

45.0 KB Created: 2020-08-31 06:49:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fa854e3facecf15b48ca0309f58dd3b5 SHA-1: ff7a516688114bf125acf417d2570934d87be3ce SHA-256: 46be6f958f2c98bd4b4f6a67b86ad73aff1078b9e11bcaf22cb5e54fa8d44dc6
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to vehicle registration, suggesting a lure. The presence of numerous embedded URLs, including the malicious one, indicates an attempt to redirect the user to potentially harmful 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=gallatin+county+vehicle+registration
    • https://static.usrfiles.com/ugd/6cf392_d14c252fa4984007a7b40024793f6911.pdf
    • https://static.usrfiles.com/ugd/b8c837_2fde680701e94438affd19eb660002ba.pdf
    • https://static.usrfiles.com/ugd/b8c837_0eb0e77a0ce34d7fbf99dfe246adae0b.pdf
    • https://static.usrfiles.com/ugd/b8c837_93f8075c03f34010992ff972bb8b7302.pdf
    • https://static.usrfiles.com/ugd/111c46_dff7d126dcd94938a91788b724372712.pdf
    • https://static.usrfiles.com/ugd/b8c837_6d8407c9959e4ee9ae53b1189bb69f36.pdf
    • https://static.usrfiles.com/ugd/d4a9d6_7167939ee3294a03bbe4703fdcf48c72.pdf
    • https://static.usrfiles.com/ugd/930050_8a074a9aca134798b4a55faf5116e851.pdf
    • https://cdn.shopify.com/s/files/1/0434/4227/4454/files/74002614094.pdf
    • https://cdn.shopify.com/s/files/1/0432/5838/0446/files/english_japanese_visual_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0434/1743/6312/files/satugefoxokov.pdf
    • https://cdn.shopify.com/s/files/1/0430/8713/4882/files/gurapa.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_off00007190.bin
e88a9b29e6be68f3b00798b3e715159aa2981bc0eccb51720f4ab37842f5bcad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7190 5252 bytes
font_01_sfnt_off00008378.bin
53a3f6c620f170bdd6169bef6b6b1d7d9fc19bbe07f8e9087585e2009b87a0b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8378 10672 bytes

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