Malicious PDF — malware analysis report

Static analysis result for SHA-256 19f41c119d0b127e…

MALICIOUS

PDF

78.2 KB Created: 2020-11-24 23:06:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 48f237e01d69466e5fd835ed7db761c5 SHA-1: bf37968c302c58b6981358155a293f234b418c28 SHA-256: 19f41c119d0b127ea65a49a1a15dfc992b0ce78ce577dba5fa20b5e3b56657a7
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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/strik?utm_term=the+westing+game+summary+pdf In PDF document text
    • https://teduruperalugo.weebly.com/uploads/1/3/4/3/134320262/34645.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370056/normal_5f8ec22f858aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386836/normal_5f8ccdb5ecefd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365653/normal_5fa67071d0466.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/xabalaru/direct_apk_downloader_chrome.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/reading_skills_in_english_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ae99aa7-324d-4b6b-a610-24c30d60f38a/gta_5_money_glitch_german_solo_easy_online.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/66702641027.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/51194458076.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/catv_design_symbols.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/difference_between_zener_and_avalanche_breakdown.pdfIn PDF document text
    • https://s3.amazonaws.com/benuka/word_ladder_worksheets_6th_grade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d4069b8-16f8-45b2-80ce-6dcd9242b1ab/pokemon_ash_grey_cheats_infinite_money.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_off0000f3d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D9 5564 bytes
SHA-256: 1082efcb2c620a9850256d434305c2d80dbbda7279122bf9390021123e650616
font_01_sfnt_off000106b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106B7 11256 bytes
SHA-256: cbf9539f1c7abff397583a218b3291ef57e84e3d598bcaf0244d487f7eb8d444

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