Malicious PDF — malware analysis report

Static analysis result for SHA-256 f701e0a839883a2e…

MALICIOUS

PDF

75.5 KB Created: 2021-03-23 17:12:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: ef89a1a43145a1a16ed050c75b2d1cf2 SHA-1: 30d0bf20370a247aeaeef86f2c760e664bc69c75 SHA-256: f701e0a839883a2eed5e9f76b6ed08d70533be6dc64cda392f79da84ca7727cf
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://soxebez.ru/strik?utm_term=how+to+stick+vinyl+to+wall PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4414860/normal_60117fcf31a63.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462344/normal_5ffd23acc426d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483833/normal_6029ada16973f.pdfIn PDF document text
    • http://molufipet.sportsontheweb.net/saxudigoba.pdfIn PDF document text
    • https://cdn.sqhk.co/mekurapiw/ibgg2ja/cplus_for_craigslist_desktop.pdfIn PDF document text
    • https://cdn.sqhk.co/pikikunifav/B1ijqha/apex_legends_pc_and_ps4_cross_platform.pdfIn PDF document text
    • https://cdn.sqhk.co/navimoxa/iePhjig/mumesipafaled.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469349/normal_6026e79591920.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387408/normal_60139b4fd0a17.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/6220fbe2-d6a3-44d8-85c1-99215a825812/17958117659.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb8d7ec0-ec9a-4131-ad60-083f1c4fb2be/29023203476.pdfIn PDF document text
    • http://wodasakuzetu.rf.gd/tetuxibame.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/904879a3-e7c3-40fc-a4eb-241a2b536f9b/77916684926.pdfIn PDF document text
    • http://rujidafedisezu.atwebpages.com/fuzapamegodegukelixe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8eb38153-4473-4501-883a-cd8c41defce4/fundamentals_of_the_faith_workbook_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c33a0bb3-131b-475a-b46a-99d37875bb3d/23700122230.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df423b68-6863-4caf-b81a-cf4215cdaa2c/wordpress_admin_redirect_to_another_page.pdfIn PDF document text
    • http://gemimixobisuju.epizy.com/aadhar_card_kaise_karte_hain.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb86964c-3d85-4278-a749-734e15a83f58/i_hunt_killers_chapter_1_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61a0f5ac-745f-4818-9e0d-3e6eb3517478/sylvia_plath_daddy_critical_analysis.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_off0000e9a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9A9 4976 bytes
SHA-256: 4cef43d04c57687890e75be0c451f9a699605d1b34477c7d9ecfcc9c64e980be
font_01_sfnt_off0000face.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFACE 11204 bytes
SHA-256: c7522127e0fbc2d1c0ef585728bc2871c8b52b1b008936c7e29e46b914a97259

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