Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6d2964ed6e8dc96…

MALICIOUS

PDF

78.4 KB Created: 2021-03-24 11:43:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: d732d7199e77623d022e7d0e9dc4caaa SHA-1: 42e568d6cbe9ea90d139f7c1755a9a5b36e367e7 SHA-256: f6d2964ed6e8dc9689db745bc761b54e199248dc6a4e6d00f43a429580c18cd9
246 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell T1218.011 Signed Binary Proxy Execution: Rundll32

This PDF document exhibits multiple high-risk heuristics indicative of malicious intent. It contains instructions to disable security software and use clipboard commands for execution, suggesting an attempt to bypass defenses and run a payload. The presence of numerous external URLs, including one pointing to a Windows 10 activator, indicates a phishing or malware distribution lure. The ML classifier and ClamAV detection strongly support a malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/123?utm_term=windows+10+activator+kmspico+free++offline PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4382962/normal_6034f4b732aa6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416140/normal_60466c22799f5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378160/normal_5fc944d15b71a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416490/normal_6007e18652f2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388422/normal_603cff0a44f6a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373271/normal_601d2f98249cc.pdfIn PDF document text
    • http://bimiwefumukiv.22web.org/latofe.pdfIn PDF document text
    • https://wojanoxunoliwam.weebly.com/uploads/1/3/5/3/135394081/vetajovig_konupufotivul.pdfIn PDF document text
    • https://xajekedifa.weebly.com/uploads/1/3/4/4/134469171/9991680.pdfIn PDF document text
    • https://betetaguzom.weebly.com/uploads/1/3/2/3/132303315/dosoto_poramageripeki_demila.pdfIn PDF document text
    • https://fosuxisemobiv.weebly.com/uploads/1/3/4/0/134000083/8986559.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379968/normal_5fcdf01d279fa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424010/normal_60077c5d471c7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lafeseg.rf.gd/27222850970.pdfIn PDF document text
    • http://garaben.rf.gd/100_names_of_allah_in_arabic.pdfIn PDF document text
    • http://zizinamejukurep.rf.gd/article_35a_in_english_download.pdfIn PDF document text
    • http://zumebixakefeta.epizy.com/96938448571.pdfIn PDF document text
    • https://29ca30ec-7ad4-487f-8637-d2d67f3a323c.filesusr.com/ugd/10b11f_6d9fe08896dc4c768438ccc6e6b124e2.pdf?index=trueIn PDF document text
    • http://sodarag.epizy.com/organizational_behavior_assignment_report.pdfIn PDF document text
    • http://lexuwusifo.epizy.com/8750430349.pdfIn PDF document text
    • https://21a67f6d-2aea-439f-a910-ed4feb6be009.filesusr.com/ugd/173616_8955e9c32e97454b8087f849be1a45a5.pdf?index=trueIn PDF document text
    • https://c788b29d-df2d-4d46-9946-349e8cce89b7.filesusr.com/ugd/a9e086_0a33746fcd884215b425f56312a3a0cd.pdf?index=trueIn PDF document text
    • http://levipazik.epizy.com/4660061914.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_off0000f2df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2DF 5724 bytes
SHA-256: 37a9c3fb3e1813122af80148e0e25187bc2bac6e19ad31b739a5fff567fabb07
font_01_sfnt_off0001066a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1066A 10836 bytes
SHA-256: 982408645bec68b1dba78441eaebe6018f4ccbb09af9ba8922f96e3ddb44efc6

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