Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ae3fa51245a6afb…

MALICIOUS

PDF

80.6 KB Created: 2021-03-24 02:05:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 9b535a0ca3e6be04b93a7589e18aef1e SHA-1: 3e481d0d7c374f071a1947f72cba1fe3ee2f230f SHA-256: 4ae3fa51245a6afba69187457a9da0d09c7ff48a7f68af67402337a141ad9876
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and an ML classifier, with ClamAV detecting it as Pdf.Phishing.Trojan. The document contains a large number of external links, many hosted on disposable domains, suggesting a link farm or redirection scheme. The primary URL points to a site offering a free stream of 'Rise of Skywalker', a common lure for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • 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.
  • 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://bologen.ru/wix?keyword=rise+of+skywalker+free+stream+online PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4474478/normal_5fffedd012b28.pdfIn PDF document text
    • https://pezofonarumupub.weebly.com/uploads/1/3/5/3/135396673/a144083a7d.pdfIn PDF document text
    • https://kenufipafalenar.weebly.com/uploads/1/3/4/6/134616414/netopajiw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489056/normal_6052685f4b7ad.pdfIn PDF document text
    • https://runanusug.weebly.com/uploads/1/3/5/3/135313332/86e5c47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464732/normal_6017fced8a4c7.pdfIn PDF document text
    • http://gotexewadegu.iblogger.org/caerphilly_weather_reports.pdfIn PDF document text
    • http://nolaxevoxuvelij.iblogger.org/how_to_calculate_molecular_mass_of_a_gas.pdfIn PDF document text
    • https://zemilogafolot.weebly.com/uploads/1/3/4/0/134096074/1551118.pdfIn PDF document text
    • https://jatevabuxises.weebly.com/uploads/1/3/5/3/135382810/8397483.pdfIn PDF document text
    • https://didekupava.weebly.com/uploads/1/3/1/1/131163833/2806668.pdfIn PDF document text
    • https://zorajifedimak.weebly.com/uploads/1/3/1/4/131437130/2629873.pdfIn PDF document text
    • http://nimidarizul.22web.org/will_kalki_come.pdfIn PDF document text
    • https://jesisime.weebly.com/uploads/1/3/4/8/134886507/40428f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420434/normal_5fda39e3cbbdc.pdfIn PDF document text
    • https://fevebelok.weebly.com/uploads/1/3/4/0/134012800/4913647.pdfIn PDF document text
    • https://wotakowa.weebly.com/uploads/1/3/4/8/134885303/tidasirurogize.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xarigezosuwa.rf.gd/how_much_is_monique_net_worth.pdfIn PDF document text
    • http://zafokofebub.epizy.com/8897043158.pdfIn PDF document text
    • http://doninedu.epizy.com/10349913021.pdfIn PDF document text
    • http://wodefelid.rf.gd/free_sheet_music_for_children_s_handbells.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_off0000fddf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDDF 5176 bytes
SHA-256: fa6926486adc12f6c05919d5c2ad917dfb02e216af3a9240c6e0aa5e1bd9559e
font_01_sfnt_off00010f88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F88 11016 bytes
SHA-256: ea850da0ef73a1493cd896a8c9c59b61fa6535445ead4a0bfa10b37f52b4ebe4

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