Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2990e8b729b3ee8…

MALICIOUS

PDF

68.5 KB Created: 2021-02-13 13:43:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: a95e82a1fac125a3a74c9078b9a33e00 SHA-1: e1a0e909901d696f3deb39f76d2d9027165d5ac3 SHA-256: f2990e8b729b3ee8289227925e7d77831b79bc2349916a926deb74541e2ba0c5
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for Pdf.Phishing.Trojan. The 'SE_BROWSER_INSTALL_LURE' heuristic indicates the document attempts to trick the user into installing malicious software by pretending to be a required browser update or plugin. The presence of a large number of external links, many pointing to Weebly-hosted PDFs, suggests a link farm or SEO poisoning attempt to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://seumenha.ru/123?utm_term=florida+dmv+manual PDF link annotation
    • https://lojodisomu.weebly.com/uploads/1/3/4/0/134042672/dijemut_pevogoboxisuju_lujugililikof_zodawo.pdfIn PDF document text
    • https://mejotozoferu.weebly.com/uploads/1/3/4/8/134866749/5527d55517102.pdfIn PDF document text
    • http://thiswaytovogue.com/boss_katana_mkii_manual7ilro.pdfIn PDF document text
    • https://siwepuxerit.weebly.com/uploads/1/3/0/7/130775843/salulon.pdfIn PDF document text
    • https://bokesavuxi.weebly.com/uploads/1/3/0/9/130968985/025921212df309.pdfIn PDF document text
    • http://tdsevsvet.ru/how_many_worksheets_in_a_workbookmqsrs.pdfIn PDF document text
    • https://gujuxufun.weebly.com/uploads/1/3/5/3/135398829/ea786968bdc5ad1.pdfIn PDF document text
    • https://fulotetaputu.weebly.com/uploads/1/3/2/7/132740707/3268659.pdfIn PDF document text
    • http://puviwaxeraw.22web.org/administration_dictionary.pdfIn PDF document text
    • http://wegansit.space/82493285214vv0vg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gawebunopom.rf.gd/56748928203.pdfIn PDF document text
    • http://fukorow.epizy.com/isoniazid_resistant_tb_treatment_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/bridgeport_public_schools_directory_and_street_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/34107368597.pdfIn PDF document text
    • http://gewumene.epizy.com/top_10_anti_malware_android.pdfIn PDF document text
    • https://s3.amazonaws.com/jivamubug/4890265943.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/google_sheets_auto_adjust_column_width.pdfIn PDF document text
    • https://s3.amazonaws.com/wewiro/vudavenepeguwekime.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d156.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD156 4808 bytes
SHA-256: 65dc3606ef3ccdb142cf3e67568c72baaf8a320f63b1b1b657cb6fad46be8ef8
font_01_sfnt_off0000e19c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE19C 10564 bytes
SHA-256: 67e6cb807e24e0f92644c591639aa069b91ad396f6de49347c3fdbcc528c0dad

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