Malicious PDF — malware analysis report

Static analysis result for SHA-256 226ffe12567c4af2…

MALICIOUS

PDF

49.1 KB Created: 2020-08-14 03:27:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 007c6fe75c738e8327433b2cfa9b6665 SHA-1: 340f5226df7aae72e65746b7e9ebd41727476b60 SHA-256: 226ffe12567c4af21768275476c1858125415e57da9290d41498902d9938379f
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.ru/pify?keyword=nevada+dmv+permit+test+study+guide'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to 'https://cdn.shopify.com/s/files/1/0429/7188/9815/files/6969577934.pdf'. The document body, though heavily obfuscated, contains text related to a 'Nevada dmv permit test study guide' and the malicious URL, suggesting a lure to a phishing or malware distribution site.

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.ru/pify?keyword=nevada+dmv+permit+test+study+guide
    • http://files.gypseyteague.com/uploads/1/3/0/7/130776073/9847427.pdf
    • http://files.rickkeyesmusiccaravan.com/uploads/1/3/0/7/130740612/lexovijeve-gesogapikufuf.pdf
    • http://files.alethearoygadbois.com/uploads/1/3/0/7/130776104/jenomugakud.pdf
    • http://files.taxperks.net/uploads/1/3/1/4/131437246/nedalafuzapaxo_jedejug_fijiben_dirobapini.pdf
    • https://cdn.shopify.com/s/files/1/0429/7188/9815/files/6969577934.pdf
    • https://cdn.shopify.com/s/files/1/0446/3286/6979/files/vevudubutulunuxuwitofo.pdf
    • https://cdn.shopify.com/s/files/1/0447/5761/4741/files/abrsm_grade_5_music_theory.pdf
    • https://cdn.shopify.com/s/files/1/0438/0609/7570/files/sezevuxovirupipag.pdf
    • https://cdn.shopify.com/s/files/1/0431/6486/0575/files/35150537703.pdf
    • https://cdn.shopify.com/s/files/1/0434/5105/6295/files/aviation_english_for_icao_compliance._student_s_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/5516/1252/files/71801416.pdf
    • https://cdn.shopify.com/s/files/1/0440/8921/3093/files/kenigilubana.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pidepuwavulosetanujerepub.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_off0000816d.bin
fd0550c606e6554b53c2bb51d14050c909eb76ec92f1b9c1fffaee0f3e933bc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x816D 5376 bytes
font_01_sfnt_off000093b3.bin
263bbedc0e15ce629189222ff52833d7570ac8798709868d7b6933707e519a30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93B3 10652 bytes

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