Malicious PDF — malware analysis report

Static analysis result for SHA-256 df3f776fceb7e595…

MALICIOUS

PDF

49.3 KB Created: 2020-08-17 16:28:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 019dbe1d0eab1c229d2d9b0fcb3d78da SHA-1: d854dbd06226c443c5352a71ab5fe161b65b3868 SHA-256: df3f776fceb7e595b200efc46a9b30f115fe977b070f335bced24bd90b4fe9fe
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=bangala+kathamlo+song+free'. Additionally, it exhibits a PDF link farm heuristic, indicating an attempt to manipulate search engine results or distribute malicious content. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted from this sample.

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.cc/pify?keyword=bangala+kathamlo+song+free
    • http://files.clintonems.org/uploads/1/3/0/9/130969915/mifokozisipom-jufotom-kenifuta-vurelezejezuka.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/36397929780.pdf
    • https://cdn.shopify.com/s/files/1/0430/9765/3397/files/accord_de_paris_texte.pdf
    • https://cdn.shopify.com/s/files/1/0433/5481/6665/files/psycho_cybernetics_book.pdf
    • https://cdn.shopify.com/s/files/1/0436/6857/0265/files/castrol_edge_5w30_c3.pdf
    • https://cdn.shopify.com/s/files/1/0440/6460/4310/files/gatabomibeji.pdf
    • https://cdn.shopify.com/s/files/1/0432/0660/7012/files/26162377595.pdf
    • https://cdn.shopify.com/s/files/1/0427/6686/0455/files/fozidigif.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nisej.pdf
    • https://cdn.shopify.com/s/files/1/0436/0273/9362/files/rilovowapefej.pdf
    • https://cdn.shopify.com/s/files/1/0436/0726/1341/files/vedifej.pdf
    • https://cdn.shopify.com/s/files/1/0435/4346/2037/files/72649907616.pdf
    • https://cdn.shopify.com/s/files/1/0448/6764/9698/files/magnets_how_do_they_work.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006946.bin
71d887b691e081337d9bc4f7cf876c6be1e0e8f34a5b4836a84334b4976eecaf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6946 5292 bytes
font_01_sfnt_off00007b1c.bin
8e5bf9967081ea15c90458fcc5ba6b771515463195db9b2659b15f46b0b02bbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B1C 3400 bytes
font_02_sfnt_off000088b9.bin
be98b4839b0ba764b28e9d2f6d15468b28a49c15c8d8c5f728bb2b693a8eea5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88B9 15200 bytes

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