Malicious PDF — malware analysis report

Static analysis result for SHA-256 178702f236354288…

MALICIOUS

PDF

78.4 KB Created: 2021-09-29 02:59:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5e4b13b34fd142eb6540df34be423c32 SHA-1: 0c0fdbf3d1c26029d42f6bc093b2dbb0cc2a15fb SHA-256: 178702f236354288a7c27722dd108e363167620ff947ba71497b89efdfdb490c
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF containing embedded JavaScript, which is a common technique for executing malicious code. The PDF also exhibits characteristics of a link farm, with numerous external URIs pointing to various domains, suggesting an attempt to redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://upoart.com/ckfinder/userfiles/files/merofepakakenelobezalano.pdf
    • http://andlupa.com/userfiles/file/78355696540.pdf
    • http://biemmecommerciale.eu/userfiles/files/sifunelatabop.pdf
    • https://coastalstudio.com/images/main/file/midemoxexetikazobam.pdf
    • http://xn--2osv9pt2jfpt.com/uploadfiles/files/41677896579.pdf
    • https://faguaflowers.com/images/admin/file/40731191745.pdf
    • http://king-pro.com/userfiles/files/23357460746.pdf
    • http://cozyboutiquecruise.com/upload/fck/file/lifipobejesipesinuvopife.pdf
    • http://piqiso.ru/userfiles/file/32735013243.pdf
    • http://przedszkolenisko.pl/userfiles/file/6233984297.pdf
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613fe44054866---48466552422.pdf
    • http://industrialsupplies.pk/userfiles/files/14048209334.pdf
    • https://gadd-asso.org/userfiles/file/joxojapafajelefej.pdf
    • https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/b5b3526b560ca28163e86130fddcd085/mowepizoxogokejanozat.pdf
    • http://balone.net/_upload/file///riximozurilidel.pdf
    • http://se-ty.com/uploads/userfiles/file/56120002364.pdf
    • https://adetexfoamgroup.centralcms.cloud/galeria/files/lomowojisafukodev.pdf
    • http://phongkhamthienhoa.vn/images/files/3182680882.pdf
    • http://zhongjiukeji.com/upload_fck/file/2021-9-15/20210915162025616142.pdf
    • http://conservativista.com/js/ckfinder/userfiles/files/zisutikoruvu.pdf
    • http://pbpharm.com/upload/files/46098095255.pdf
    • http://polaryachts.com/res/wysiwyg/file/dupinoxof.pdf
    • https://7foro.exceltur.org/exceltur_nuevo/ckfinder/userfiles/files/damaduvekewewim.pdf
    • http://digitalpolicycouncil.com/imagenes/file/77586007324.pdf
    • http://www.psychophonie-tarbes.com/ckfinder/userfiles/files/37760041523.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=mapy+pro+android
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c46f.bin
2e7b1cd82b60f76e6007bda0b9f390683ddfb6e008c94c0b08a8a316bdfd274b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC46F 10048 bytes
font_01_sfnt_off0000dacb.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDACB 16792 bytes
font_02_sfnt_off0000f2dd.bin
0c45bd757ccd99bfd8301dd1541aceabd9ca68f6c9c594db244fee1d3ea75e98		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2DD 21320 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.