Malicious PDF — malware analysis report

Static analysis result for SHA-256 429faaa0617d1420…

MALICIOUS

PDF

73.1 KB Created: 2020-08-15 00:18:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c51e17391c6605c9f0b0621074e5a030 SHA-1: ae3bf5b2c9049d08a70b0df2cb5b26c49c49a565 SHA-256: 429faaa0617d14207af4a4a4cbedf4ec630643a4a5a6929a1e02bb6a6f1492a0
152 Risk Score

Malware Insights

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

The PDF contains embedded links, with one critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be a lure related to 'Disneyland paris park guide 2018'. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves redirecting the user to a malicious site, likely for phishing or further malware delivery.

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/pify?keyword=disneyland+paris+park+guide+2018
    • http://dagevuroj.elementaryartsintegration.com/uploads/1/3/2/6/132682646/zabotumepuju.pdf
    • http://files.nickysawesomewebsite.com/uploads/1/3/0/7/130775151/mixisewot.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dovaxetudomorunuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/medarovadujagowurevasote.pdf
    • https://cdn.shopify.com/s/files/1/0435/7606/6207/files/63583229338.pdf
    • https://cdn.shopify.com/s/files/1/0434/8739/6004/files/bienestar_mental_y_emocional.pdf
    • https://cdn.shopify.com/s/files/1/0437/2388/2664/files/mavafafekatumabasuw.pdf
    • https://cdn.shopify.com/s/files/1/0434/2756/1621/files/10374079149.pdf
    • https://cdn.shopify.com/s/files/1/0430/8575/8618/files/fidalogulozu.pdf
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/ciencias_formales_libro.pdf
    • https://cdn.shopify.com/s/files/1/0434/0436/1895/files/goramixinebigonamup.pdf
    • https://cdn.shopify.com/s/files/1/0447/8153/5389/files/lobax.pdf
    • https://cdn.shopify.com/s/files/1/0450/3538/9086/files/43052185726.pdf
    • https://cdn.shopify.com/s/files/1/0434/5384/1560/files/32403305240.pdf
    • https://cdn.shopify.com/s/files/1/0432/9114/8444/files/wonefejizede.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_off0000bf90.bin
ded9cfab9012bbe79ef919cd8d5c71c370d149e01cbc0c2401330ce0e58700ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF90 5812 bytes
font_01_sfnt_off0000d36e.bin
6718075acc4e34271e9be24c3c2bc78a057ebd494bbbfdd5dfd8bcd5c7624b0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD36E 10880 bytes
font_02_sfnt_off0000f88d.bin
8589ed0b5aa3c7ec8acad187615ecbb413a9aa831ed381427b6df354f70128ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF88D 18820 bytes

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