Malicious PDF — malware analysis report

Static analysis result for SHA-256 60796ae0ce4246e5…

MALICIOUS

PDF

97.1 KB Created: 2021-09-21 00:16:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 9678ad81bc92281dae35c748e40c8eb8 SHA-1: 90bc7af42dabee646ade8fd00081a5807c28e7db SHA-256: 60796ae0ce4246e5399588cfb333ce1409168da743fd5e26ac7e4fb138313576
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to external sites, with several heuristics indicating a link farm and potential phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing or downloader attack, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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 http://abwingsmd.com/uploads/files/75715624538.pdf In PDF document text
    • https://pokereshop.cz/data/file/gisagopuwidasefese.pdfIn PDF document text
    • http://clear-es.net/yamituki-n/uploads/files/85534318427.pdfIn PDF document text
    • https://edubox.mn/uploads/users/0/files/ginalow.pdfIn PDF document text
    • http://tarnava.eu/user_images/file/86576903779.pdfIn PDF document text
    • https://sdhouse.info/ckfinder/userfiles/files/32610110970.pdfIn PDF document text
    • http://skkouty.cz/ckfinder/userfiles/files/31502621304.pdfIn PDF document text
    • http://runbo.net/upfiles/files/16317838562468.pdfIn PDF document text
    • http://nriloan.jctoursandtravels.in/files/nulalelisib.pdfIn PDF document text
    • https://www.bevillelecomte.com/ckfinder/userfiles/files/vezoxujasatixizojutiker.pdfIn PDF document text
    • https://norservis.info/files/files/76000714969.pdfIn PDF document text
    • https://btegypt.com/file/bosujoduxifujujutofibol.pdfIn PDF document text
    • http://gruppocreta.com/userfiles/files/81469475144.pdfIn PDF document text
    • https://calson.garment-pro.com/ckfinder/userfiles/files/zizorerubojuzebulifib.pdfIn PDF document text
    • http://bociany.sk/media/file/nabapirab.pdfIn PDF document text
    • https://illinoisfiscalpolicycouncil.org/app/webroot/userfiles/file/bosifisinaziredexoleded.pdfIn PDF document text
    • https://prawobrzeze.info/userfiles/file/91574914289.pdfIn PDF document text
    • https://lesartsdansmonjardin.com/userfiles/file/20210911211423.pdfIn PDF document text
    • https://adikketiga.com/contents/files/84422155847.pdfIn PDF document text
    • http://orikon.net/Images_upload/files/jewij.pdfIn PDF document text
    • http://www.dawnrotaryclub.tw/UserFiles/files/bevesaxik.pdfIn PDF document text
    • http://getampedmag.com/ckfinder/userfiles/files/tofisexupe.pdfIn PDF document text
    • http://elazentrale.de/images/uploaded/file/74814871324.pdfIn PDF document text
    • https://roadtoring.com/wp-content/plugins/super-forms/uploads/php/files/71c1a59fce0104e5d7f9af770d90d155/kemuvipojetedif.pdfIn PDF document text
    • https://pasationtravellers.com/root/FCKeditor/file/6745601236.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=top+site+film+streaming+gratuit+sans+inscriptionPDF link annotation
    • 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011388.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11388 19036 bytes
SHA-256: 65af597cb26efdc9c2d0ed7a06dcad95a9ab75ee6542056e68f033b93a5649f2
font_01_sfnt_off0001450f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1450F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00015d26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15D26 10888 bytes
SHA-256: 8c4deabd44accbe7126fe429ebf2d1621135b29165947556a52400893af26284

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