Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bbbe89c309177ce…

MALICIOUS

PDF

33.1 KB Created: 2020-08-21 16:13:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1a591a87edc51867efeb97b16829ced6 SHA-1: e42cffb976d49bebef5e0e3962bb3b5ef2b5f348 SHA-256: 3bbbe89c309177ce6bb627291d9c7358af3a6cbc982d591b37dadebdfdfc0592
92 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a known malicious domain, ttraff.com. This suggests a phishing or redirection attack. The document body, though heavily obfuscated, contains text related to the URL's keyword, indicating a lure. The ML classifier also strongly flagged this PDF as malicious.

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.
  • 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/pify?keyword=desert+song+hillsong+sheet+music+free
    • http://dumazat.beautibulls.com/uploads/1/3/1/1/131163635/gexagu-nijurazisunexam-lovaduxutotasux.pdf
    • http://files.angelfirevet.com/uploads/1/3/2/7/132712139/pokixomikaxow.pdf
    • https://cdn.shopify.com/s/files/1/0433/9243/4326/files/gisetoxagevisarenoge.pdf
    • https://cdn.shopify.com/s/files/1/0438/3126/3394/files/56966374199.pdf
    • https://cdn.shopify.com/s/files/1/0450/4377/7694/files/convertir_de_a_word_en_linea_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0431/3432/0794/files/vanipube.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51686393220.pdf
    • https://cdn.shopify.com/s/files/1/0439/9408/7582/files/68326638853.pdf
    • https://cdn.shopify.com/s/files/1/0439/0833/3736/files/fetujez.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_off00004341.bin
e06b895abbe444ba293f61a9e9c1fd199d8489fbfcf0fefe648de0f58b74c72a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4341 5084 bytes
font_01_sfnt_off00005469.bin
f1a5fcdb3f9b9244b70fcf6cb9254ea79a8813956247b04789bf8ec53d5e6c85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5469 10436 bytes

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