Malicious PDF — malware analysis report

Static analysis result for SHA-256 07ac95b5410f3de9…

MALICIOUS

PDF

89.2 KB Created: 2021-03-31 13:36:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 45c3d6390060fd9f704ec1707ea82d18 SHA-1: 5b65bba384497b7d1ad094985cf292cc161b53c2 SHA-256: 07ac95b5410f3de90ce2f9b6cd910ead7c1c3b7ff6c7d624e72b8c82b072bddd
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 0.9993

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://zajinet.ru/wix?keyword=act-67c-practice+answers+reading+test PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4497688/normal_6056c88448596.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454056/normal_605114e357122.pdfIn PDF document text
    • https://komiwafaka.weebly.com/uploads/1/3/2/7/132712661/wazamu-bezabilogaxatab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498404/normal_602f9846f06a7.pdfIn PDF document text
    • https://kerawidirara.weebly.com/uploads/1/3/4/7/134746453/6423128.pdfIn PDF document text
    • https://nijomusuvul.weebly.com/uploads/1/3/4/6/134671469/varinikuxedixe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471238/normal_6041206fbd71b.pdfIn PDF document text
    • https://zeraxoxuret.weebly.com/uploads/1/3/4/6/134642117/4509638.pdfIn PDF document text
    • https://tufubigin.weebly.com/uploads/1/3/1/4/131453284/5077400.pdfIn PDF document text
    • https://junimadegerozo.weebly.com/uploads/1/3/4/0/134096607/biwejij.pdfIn PDF document text
    • http://fijeveg.iblogger.org/rakuni.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410000/normal_5fe103e065a52.pdfIn PDF document text
    • https://wokukowuvewa.weebly.com/uploads/1/3/4/3/134316041/xebeweli_roditokiw_biwojeradafikaf_milutu.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/a98ec979-cdcf-4002-9d1f-3ef3dc84e85d/78227749552.pdfIn PDF document text
    • http://zotijoxamofos.epizy.com/40081804381.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b07f68eb-853e-466f-ba33-b2c579e7ccd4/how_many_quarts_of_oil_does_a_2008_ford_escape_v6_take.pdfIn PDF document text
    • http://bapexuzajo.epizy.com/guide_tourisme_beyrouth.pdfIn PDF document text
    • http://najorenowodume.epizy.com/occupational_respiratory_diseases.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc68a666-ce73-498e-8d14-c4f9fa872390/likumuxugemetije.pdfIn PDF document text
    • http://pipotaxi.rf.gd/mixotig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afb856a3-8ece-46ee-906c-c9eefce74187/which_cirque_du_freak_character_are_you.pdfIn PDF document text
    • http://buzanone.epizy.com/tadizovidajowarefuxal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b364a36-7d13-4a06-bd3c-ca04c671360a/pupagogogugud.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_off00011f77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F77 5556 bytes
SHA-256: 3dece59ecd0fc857481f5d5bcbd9efe6d677af543cbac99f54340635dfea6d24
font_01_sfnt_off00013296.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13296 10824 bytes
SHA-256: 86f30a5af7865895273b10e6d4a8e93c819685a3836e4d0c96a43a16637df132

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