Malicious PDF — malware analysis report

Static analysis result for SHA-256 f94fe0e77631854c…

MALICIOUS

PDF

68.1 KB Created: 2021-03-31 23:39:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: df512a85d726c4a339b9c1b952bacaf5 SHA-1: 2a27703c8fc4969c7472434fe64a90e10129b819 SHA-256: f94fe0e77631854cf2da9a07969c06bb3416ced070a9e6116ef24f86f11ef4d5
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable hosting and link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a common tactic to redirect users to malicious sites, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://lozipotod.ru/wix?keyword=setting+up+proportions+worksheet+pdf PDF link annotation
    • http://baderakavakuf.22web.org/castlevania_symphony_of_the_night_emulator.pdfIn PDF document text
    • http://boxidodo.22web.org/prophet_astrology_software_telugu_free.pdfIn PDF document text
    • https://wujipiledulom.weebly.com/uploads/1/3/4/6/134695719/7fb9ccf1ff.pdfIn PDF document text
    • http://uspex22.online/29201563685qnnum.pdfIn PDF document text
    • http://novubelugalij.medianewsonline.com/sarufimoxirifikabe.pdfIn PDF document text
    • http://kellys.space/tabletopia_steam_loginz617i.pdfIn PDF document text
    • https://somusepuxe.weebly.com/uploads/1/3/1/0/131070447/meterovafurulex.pdfIn PDF document text
    • https://ladeletoleworuw.weebly.com/uploads/1/3/4/7/134712388/6ef30b304bfc.pdfIn PDF document text
    • http://minesaxofunawi.getenjoyment.net/autocad_insert_border.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382639/normal_5fdd97bb31df8.pdfIn PDF document text
    • http://povoponikevave.iblogger.org/70610463162.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457305/normal_603c5def15057.pdfIn PDF document text
    • https://xiligori.weebly.com/uploads/1/3/1/4/131411896/folatazuz-gafipiwa-piwirepibudef.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/ae8b9916-2b29-428a-8f44-be78b13f5d58/12105975715.pdfIn PDF document text
    • http://timivaferegigor.rf.gd/the_devotion_of_suspect_x_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fb55655-9078-4160-8a9e-ed683cb9bdec/toyota_hybrid_camry_reviews_australia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d0f5470-4b9e-4882-8f90-3d585e0c85b5/project_management_tools_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f8976d9-bb41-4946-89d2-f43ccfb27b0d/woligenodenola.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c4b82c1-0bf8-4971-bf7e-f8a7dd801db4/zitadekujebokatamu.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_off0000cc0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC0F 5320 bytes
SHA-256: abd0cb380ad47da68d32d3849c0bab87c4edb126e12d4a814fba59034018a25a
font_01_sfnt_off0000de41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE41 10212 bytes
SHA-256: b8d49c142ce7fc268f0ceb16826ce1950ba0049e056ec832c80ef7c7ca917e17

Open this report in the interactive analyzer, or submit your own file for analysis.