Malicious PDF — malware analysis report

Static analysis result for SHA-256 575e3601bed05f35…

MALICIOUS

PDF

141.0 KB Created: 2021-03-20 17:41:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: ac611716b90332dd8f87ab20b21e9bf9 SHA-1: b0e55095f1c7e653918a2567617779dd55ed84bd SHA-256: 575e3601bed05f351d2ca09626b685c525615b3cf9d9a03c8f62f56ddfa19cf5
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document body, though heavily obfuscated, contains references to 'Bundesliga fixtures 2020 19 pdf' and is associated with external URLs that are part of a link farm on disposable hosting, suggesting a phishing or malware distribution lure. The presence of embedded URLs and the nature of the heuristics point towards a phishing attack leveraging a document as an attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/award?keyword=bundesliga+fixtures+2020+19+pdf PDF link annotation
    • http://likujamozajowu.22web.org/vokuxejiroximujonek.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420037/normal_5fcebd8458ed2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499282/normal_5fc96ad73be18.pdfIn PDF document text
    • http://novubelugalij.medianewsonline.com/aula_internacional_1.pdfIn PDF document text
    • http://gavolav.mywebcommunity.org/tobopafid.pdfIn PDF document text
    • http://famozosivupiwij.sportsontheweb.net/16045691749.pdfIn PDF document text
    • http://valuburikodajad.medianewsonline.com/msc_botany_books.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378425/normal_5fd0a962152b7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pekowob.onlinewebshop.net/kunabotopa.pdfIn PDF document text
    • http://zowofiz.myartsonline.com/niteti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/991b7cac-e1de-49c1-817e-ec5c834f2b64/how_does_plate_boundaries_cause_earthquakes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3708939a-d7cd-4bd2-ad45-07e5bf476b0b/78165312574.pdfIn PDF document text
    • http://zitadufafasid.onlinewebshop.net/bajatejagodomo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/773443b3-e8e8-49ad-b0a0-549fe6b43ca8/how_to_calculate_the_tds_interest_on_late_payment.pdfIn PDF document text
    • http://bexukavibume.myartsonline.com/autosys_commands_in_unix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94a6f037-0259-4a60-a975-1e6f6f167c8d/biretu.pdfIn PDF document text
    • http://gudugapapilile.atwebpages.com/tukewubebogamojokomu.pdfIn PDF document text
    • http://pelebirepopo.onlinewebshop.net/86162205779.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82366cda-09a8-427c-a91b-b196bdadf93b/nc_drivers_license_suspension_check.pdfIn PDF document text
    • http://rivenoke.onlinewebshop.net/why_is_deterrence_theory_important.pdfIn PDF document text
    • http://fumojaw.epizy.com/42525741126.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_off0001e29c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E29C 5808 bytes
SHA-256: 1a04f35b7c0b185d8e527b56eabaca10ca5b75f81c87a846852005605a5f7200
font_01_sfnt_off0001f67d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F67D 15284 bytes
SHA-256: eb130280b7fa0ff0b3b1df69192042ef607937416fdc7343f3d2cbfc682b62f0

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