Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ae7cb6c4ba2c3b2…

MALICIOUS

PDF

73.2 KB Created: 2020-12-14 00:47:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: bc175867e842f7a3bb6ad8a04562d08e SHA-1: dd98dbafa38ee95089efde62b34f1516a98ee24e SHA-256: 7ae7cb6c4ba2c3b2d2b22cddadd9e231be81166e7cc58014cb5ac15562d30788
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=griffith+public+schools In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0ebbe5687f52b6b814126/t/5fc8274ef97c193540e491dd/1606952782841/wivunojigemuvadu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/263757c3-1161-4601-92d1-6d4a1e7a6226/the_heart_of_yoga_read_online.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc64749c14dfd36fe161ba5/t/5fd5f14f226e9048faab3f8e/1607856463506/29538517721.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4d1b73398ff751546ef88/t/5fcd666bcded405bb8ebb02a/1607296620082/create_my_wiki_page.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32b9dd2c-9562-45e1-b5a7-a0986b5fac4a/diagrama_de_electronivel.pdfIn PDF document text
    • https://s3.amazonaws.com/rotowan/wapanejaragufegagajesila.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eda76c0e-822b-4ed3-b71e-f1f3b289ab48/toyota_electric_forklift_service_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cc89cdc-f202-422c-aedb-d12145dd3470/11th_anniversary_gift.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b56036d-4242-47fe-9653-2607d16951bb/avs_dvd_creator.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5313f104edf1d779d1ce4/t/5fc5e5ac145a8629dc7d7738/1606804910044/nizujodobejiwu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf1ae64be903ae63f3868/1606218159326/monster_hunter_orage_english.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5c19bab79f442f24acc6a/t/5fd0dfb3c0a29916a5770b34/1607524275640/namumat.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/92436542595.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1050bab79f442f22a407f/t/5fc831bb92e74531f3c22286/1606955452362/baby_nursery_rhymes_songs_sinhala.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_off0000dfd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFD3 5064 bytes
SHA-256: 9e431f523376ab22024571dee5ad4aae043276df54def3badbc440e554a21691
font_01_sfnt_off0000f108.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF108 11132 bytes
SHA-256: 4158bcdda6d0de60b1fcb8044f6efec66fcef816569bc017b6f167316670028d

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