Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a8a03f6288e5b09…

MALICIOUS

PDF

80.2 KB Created: 2021-01-22 05:18:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 3aca265659bb47aa36f2b6c8e8a1e256 SHA-1: df7d23eb73517a24b2aa37439fd9991c8c426892 SHA-256: 9a8a03f6288e5b0995f631b81ac97dad0994922d817b16f1ea757ccb9fc889fc
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to `https://gettraff.ru/123?utm_term=laguna+creek+high+school+band`, which is flagged as malicious. The ML classifier and ClamAV also identified this PDF as malicious, indicating it likely serves as a phishing lure or a distribution point for further malware. The embedded URLs suggest a phishing attempt or a download mechanism for a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://gettraff.ru/123?utm_term=laguna+creek+high+school+band In PDF document text
    • https://cdn.sqhk.co/luxixumogez/lidqXgh/cpl_customized_pixel_launcher_apkpure.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377410/normal_5fe30234c0c0d.pdfIn PDF document text
    • https://cdn.sqhk.co/dixobiwi/TN6giic/21753517414.pdfIn PDF document text
    • https://cdn.sqhk.co/gidufulelav/xiipidx/gijegug.pdfIn PDF document text
    • https://site-1175521.mozfiles.com/files/1175521/gobudizovexezoporagivewi.pdfIn PDF document text
    • https://cdn.sqhk.co/nujidegowupi/ihfZibh/44358395219.pdfIn PDF document text
    • https://cdn.sqhk.co/waxigapo/hdJfmGH/equalizer_pro_apk_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/dekaroku/iffoGhh/47778916319.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454172/normal_5fe699a46e9de.pdfIn PDF document text
    • https://site-1244917.mozfiles.com/files/1244917/pisovodogefajowob.pdfIn PDF document text
    • https://site-1167953.mozfiles.com/files/1167953/jasewikotakaxodezaro.pdfIn PDF document text
    • https://cdn.sqhk.co/donewipimep/jihbhbM/53423814430.pdfIn PDF document text
    • https://cdn.sqhk.co/vulovosovem/cetYgfx/growtopia_wiki_crystal_recipes.pdfIn PDF document text
    • https://cdn.sqhk.co/guledijuxi/TODtRGY/feisty_greek_delivery.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/suzixegazunow/wapopisip.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/the_chainsmokers_songs.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDBB 5148 bytes
SHA-256: 18c1012ba260b1e03a691791dee685b776abf1f6bc29a068caaf9b07b93ac1ee
font_01_sfnt_off0000ff1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF1F 11296 bytes
SHA-256: eb444417f4fe4dd43346e1581f7515efb1cd4cc2c80ce7246a1475fa1e03e44b
font_02_sfnt_off000125b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125B3 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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