Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe37241eb16d38a6…

MALICIOUS

PDF

57.6 KB Created: 2020-10-02 13:17:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 1fb97d9a7c5da1edc5de6948df3e65f5 SHA-1: 3ea6b1e673349919f96523126a5d87265d094a39 SHA-256: fe37241eb16d38a602543e46599934793193a410c7b20e50811f5f0064030617
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external websites, with at least one identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that is also flagged as a malicious redirector. This indicates a strong intent to direct users to potentially harmful sites, likely for phishing or 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.club/pify?keyword=in+place+algorithm+sorted+array In PDF document text
    • http://files.whiterivermwd.com/uploads/1/3/1/1/131164157/ruwuvat.pdfIn PDF document text
    • http://files.callabeautyboutique.com/uploads/1/3/1/8/131871871/1876093.pdfIn PDF document text
    • http://lemapon.lifeandinsights.org/uploads/1/3/0/7/130739309/kukipowomudevir.pdfIn PDF document text
    • http://files.loveyourbodyhc.com/uploads/1/3/1/4/131437619/jazugofedivom.pdfIn PDF document text
    • http://guxaxeb.maestrodonappert.com/uploads/1/3/2/3/132303354/kajakozokezan.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3744/7576/files/rasopojuviwubamabebaxuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/5740/0994/files/silugugusesotevub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6074/6647/files/2020_act_dates_and_locations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5229/3541/files/iterate_over_two_strings_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8543/6830/files/50516224418.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a67b399-c009-49d6-bd76-8ee3491e2428/46814241682.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbec58b7-0df1-41a4-9ca3-b4c0d32ab51f/89665566488.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ed90f79-1022-4682-a94b-3a671049addd/8114803237.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA023 5524 bytes
SHA-256: eee565f543aba4ef69d78007b402011c9d1fc2b31fb914ef53a5a5afc0dea041
font_01_sfnt_off0000b2c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2C4 11404 bytes
SHA-256: b4ccc04a35457f581f73a5c966c5c218d04ba53a967fc6365547c750564898e7

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