Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad44642dd2aa4bd2…

MALICIOUS

PDF

70.3 KB Created: 2020-12-11 07:21:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: e39cdd762d81144e277687c09b7ce844 SHA-1: 3eaa241a051a4cece18d198507397e7c3dfa2137 SHA-256: ad44642dd2aa4bd29f1589e460faa6902301a529195e63fcf4470d39a26bbf64
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ggtraff.ru/aws?utm_term=area+of+irregular+shapes+worksheet+answers+pdf'. This indicates the document's primary purpose is to lure users to a potentially harmful external site. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ggtraff.ru/aws?utm_term=area+of+irregular+shapes+worksheet+answers+pdf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4493209/normal_5fc940b1689b9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/leawo_blu-ray_ripper_for_mac_review.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2aae6f7cf8c7540363e08/t/5fcd63505d2e6f3bda4f866c/1607295825200/boat_drivers_license_texas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f8e3cb8-290f-4cb4-b92b-8367400673a2/configurar_control_de_megacable_xview.pdfIn PDF document text
    • https://s3.amazonaws.com/muvunekagok/6889835390.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/what_is_onq.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08243c66-7f3f-4ba1-b550-eabb9ca86df3/onan_7000_generator_troubleshooting_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/a_root_canal_performed.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6ba88f2297e36a9f99d90/t/5fc8dcf413f8d93bf20f5e97/1606999284894/cosmology_and_astronomy.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce640ee68b41342bae178f/t/5fd22f69d97b572b89e478b7/1607610221784/senogikufatovowu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2da458139af037651e5bd/t/5fc8cc9a8bd779356759dc59/1606995098335/bike_race_game_wiki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16c9d2e7-4c1e-4356-b5f6-23f04f12b932/ancient_mesopotamia_political_life.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf586e18e72e5fdbcee2c0/1606375536273/vunokabajizoje.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/brucellose_animale.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_off0000d33f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD33F 5448 bytes
SHA-256: 778aade4528579c20feea89d3b961f1dce7f02d8eea443179a6ce6d1b403e49e
font_01_sfnt_off0000e5d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D8 11324 bytes
SHA-256: 3c730398e2b09542241a213e7c75eacd4b171955731e2bae4c3e8778e53dd4c2

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