Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb4ce63dbc45142d…

MALICIOUS

PDF

79.7 KB Created: 2020-12-02 19:43:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 9e9ce8e4979780b6bcde4775456b8490 SHA-1: bf566490379e6dfe70d750e01f7db329e2873eec SHA-256: eb4ce63dbc45142d8f374ab113df7dcca6202292a049584557f0f9505b7af2a8
156 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious ML classification score, indicating a phishing or malicious content distribution attempt. The embedded URL 'https://trafffe.ru/aws?utm_term=emulateur+android+pour+kali+linux' is likely intended to redirect the user to a malicious site. The document body, though heavily corrupted, contains text related to 'Emulateur android pour kali linux', suggesting a lure for users searching for such information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffe.ru/aws?utm_term=emulateur+android+pour+kali+linux PDF link annotation
    • https://xomowozijirogap.weebly.com/uploads/1/3/4/6/134667332/zapagajol.pdfIn PDF document text
    • https://masogivuxun.weebly.com/uploads/1/3/4/8/134887982/0c6346.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/52cfce18-dd22-475f-b514-5cdc8762df76/anatomy_of_a_bone_coloring_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/musoxifuvitalo/73909670350.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ebe5f9866f3fd2d478df/t/5fc56f629b1ed0353894f1db/1606774627321/lozozemixigefubagujavege.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10fb5bda9c57a97bf17be/t/5fc19f4361e25426e1753c41/1606524739770/annette_alvarez-peters_husband.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4a70f81c9a2a0c9836a8/1606371954511/onkyo_tx-sr605_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd17d320-2161-495c-9dc2-372d9c6be77a/vovoranifasumozegoz.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e552ec917750a3d7e003/t/5fc124e5e6d49a06bbbae843/1606493413851/rockport_fishing_report.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc00a03c6229360eca839ab/t/5fc182b06457125654756a9c/1606517424621/suzaj.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d7dc3dfdd95b60d4c91c/t/5fc30620e6d49a06bbf6d513/1606616608900/noluro.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_off0000faf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAF1 5016 bytes
SHA-256: 655a47a5e5792f88a8a06f1916b7c93226d13aa0bb451b049330ac8e83c20353
font_01_sfnt_off00010beb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BEB 11448 bytes
SHA-256: b6b4821938c86f577de828738e17923ba59c01bac287acb34e48e33cb4748119

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