Malicious PDF — malware analysis report

Static analysis result for SHA-256 408f5335dc9831a2…

MALICIOUS

PDF

98.0 KB Created: 2021-03-12 02:41:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ec85ab54cac47b70515d82ae84c6932b SHA-1: b7aeb4e1a4812e5c128881445d2a90469df07bdd SHA-256: 408f5335dc9831a265b017daca0f1d58343fbe10e6e55944ceaf5798ad99eb1e
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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://gimoguvi.ru/award?keyword=computer+command+prompt+codes+pdf PDF link annotation
    • https://giledaxije.weebly.com/uploads/1/3/4/3/134312043/4f9cefae.pdfIn PDF document text
    • https://jinumajot.weebly.com/uploads/1/3/1/4/131409926/44cf0e.pdfIn PDF document text
    • http://sevetif.22web.org/zipozakezumewaxasosugurel.pdfIn PDF document text
    • http://wide-mean.top/sapemaj2fmoo.pdfIn PDF document text
    • http://limebago.iblogger.org/salesforce_lightning_components_cheat_sheet.pdfIn PDF document text
    • https://gozerezujokosas.weebly.com/uploads/1/3/4/8/134856803/33d9bde58c3323.pdfIn PDF document text
    • http://life50it.pro/5911565140662glq.pdfIn PDF document text
    • http://dobogoj.iblogger.org/43501228224.pdfIn PDF document text
    • https://jufozovujibozom.weebly.com/uploads/1/3/4/3/134360308/1537019.pdfIn PDF document text
    • https://siroxaje.weebly.com/uploads/1/3/4/0/134000026/xutif.pdfIn PDF document text
    • http://mrshadow.net/movie_based_on_bad_blood_booki5e0s.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://uploads.strikinglycdn.com/files/4e72a6c5-d0da-4910-850e-fe219b9ab6c8/zujakipowikeluw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92d4615c-cf6d-4d0b-87e7-d9649432c0a7/mogimi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75515b61-90bc-46a2-a43f-f45cb7c01bf0/93280916363.pdfIn PDF document text
    • http://dabububulakam.rf.gd/45394502409.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8167703b-ee55-4be8-b343-d4c42942abeb/libifulesitipujax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efcdd93c-14f8-46e5-b451-b09a7e446299/the_culture_code_chapter_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d80a13f7-b0d2-49c6-aca0-bc9578a01c21/guwarafifi.pdfIn PDF document text
    • http://wagimaparojova.epizy.com/67876614360.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c1114e6-8a6e-44a1-af18-95931b229bd0/how_to_write_a_scientific_conclusion_for_a_lab_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/202e75b6-a467-459e-97de-bd972330f4cf/ccna_routing_and_switching_notes_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67a931c4-0415-45f4-8ff6-69252b29ab16/how_to_public_speaking_skills.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_off00012ebb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EBB 5128 bytes
SHA-256: 381a4876595bda158493c455a734e0d5cec54e6630aab7771b4e066b887657d8
font_01_sfnt_off00014005.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14005 13640 bytes
SHA-256: 021ea3c1c31a59d97881565c0085d55326cef32090b2cbeb7013b6f1727deba8
font_02_sfnt_off00016be0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16BE0 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34