Malicious PDF — malware analysis report

Static analysis result for SHA-256 583e0b526e7ab8e8…

MALICIOUS

PDF

50.8 KB Created: 2020-08-30 15:10:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd05e2ca113ce218665e28e145c5b4d4 SHA-1: a952fd31899ddc1447763e7e7d38f89453d7476f SHA-256: 583e0b526e7ab8e82650209f51d38ee42adbd7a40bca30f4817e16a3f58765d6
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=1.4+investigacion+documental+y+de+campo'. This URL is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, contains this URL and other links that appear to be part of a link farm, suggesting a social engineering or SEO poisoning tactic to drive traffic to malicious infrastructure.

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.com/wix?keyword=1.4+investigacion+documental+y+de+campo
    • https://static.usrfiles.com/ugd/b8c837_3bb1240c36df4070a09f433bd2f94fb8.pdf
    • https://static.usrfiles.com/ugd/b8c837_3662aec4e0c945e5b011eba02bae30d8.pdf
    • https://static.usrfiles.com/ugd/b8c837_718bb31baaeb4d43b6c8e52a6d7fb111.pdf
    • https://static.usrfiles.com/ugd/d55797_db104cd5d6a84423a4597516a493db7d.pdf
    • https://static.usrfiles.com/ugd/b8c837_275931a6218d46978e50a8921bcc6fe1.pdf
    • https://static.usrfiles.com/ugd/b8c837_b4e4401e666840c294d854791d635bba.pdf
    • https://static.usrfiles.com/ugd/b8c837_20ef6ccba5964ecfb694e2da3c44c52b.pdf
    • https://static.usrfiles.com/ugd/f46427_0e7370a50f5449e583a4f384d6278b9c.pdf
    • https://static.usrfiles.com/ugd/e42ee3_8a55caf1371d4a33b8fb0c161cf23684.pdf
    • https://static.usrfiles.com/ugd/26938b_98d5bf20e3014469b2814edf5704c55f.pdf
    • https://static.usrfiles.com/ugd/77eba6_2d7fb4f9a5344f75a672056da458e14d.pdf
    • https://static.usrfiles.com/ugd/b8c837_a4ef48db61934a5e8163bc0ee5d50ce6.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/dewegufitirowamifiwexav.pdf
    • https://cdn.shopify.com/s/files/1/0447/4303/2981/files/62073787566.pdf
    • https://cdn.shopify.com/s/files/1/0431/0702/5056/files/bofelixaxux.pdf
    • https://cdn.shopify.com/s/files/1/0439/9307/1774/files/chakravyuha_songs_in_telugu.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_off0000863b.bin
7a507fb79370ae9a6b5f9112ba5dd41e9e868f24acab0b017a40fd92263ca901		 pdf-font-stream PDF embedded font (sfnt) at offset 0x863B 5536 bytes
font_01_sfnt_off0000991b.bin
c23001d442b27e019e5f592beca2a426f975dc18792fca926b16f4e1a0719bbe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x991B 10948 bytes

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