Malicious PDF — malware analysis report

Static analysis result for SHA-256 1462577ca0bcdf02…

MALICIOUS

PDF

83.3 KB Created: 2021-08-25 21:54:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: ab4d90024905150ba2eaceedf79d1e96 SHA-1: 3d6e0123fa439c5c52f575f7bf78388dff74fa56 SHA-256: 1462577ca0bcdf0228b6991721c1184a293420e648253443b0d49576e32fc853
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to compromised WordPress sites, suggesting a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a link farm designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://moveo-sport.pl/userfiles/file/72032959212.pdf In PDF document text
    • http://suachuaspa.com/upload/images-content/files/papiteguxatekubinorikevo.pdfIn PDF document text
    • http://a2kat.ru/userfiles/file/38791064237.pdfIn PDF document text
    • http://crabandclaw.com/uploads/files/43605132963.pdfIn PDF document text
    • https://acrgroup.nl/userfiles/file/80637179001.pdfIn PDF document text
    • http://topcudental.com/img/userfiles/files/limutaxipapiwas.pdfIn PDF document text
    • http://thetuckerfamilyreunion.com/clients/67950/File/ragowojedezegukinig.pdfIn PDF document text
    • http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16096a785dcc1e---78770378293.pdfIn PDF document text
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c96c537878e---sobasopuval.pdfIn PDF document text
    • http://rencontres-icare.org/userfiles/file/33249034748.pdfIn PDF document text
    • http://izdo.org/img/userfiles/files/92668862981.pdfIn PDF document text
    • https://questyme.ca/userfiles/file/98728418305.pdfIn PDF document text
    • https://bursakaynak.com/userfiles/file/66305483996.pdfIn PDF document text
    • http://helloshoppingnepal.com/userfiles/file/xifaguwewokejazozeruvubo.pdfIn PDF document text
    • https://implant-drill.com/userfiles/file/fasejikenozuginefiziz.pdfIn PDF document text
    • http://koopmankennedyfeller.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/13912916205.pdfIn PDF document text
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606f681643986---padijapivaxenu.pdfIn PDF document text
    • http://hurtmar.pl/Upload/file/voretiwebupu.pdfIn PDF document text
    • https://tapetcenter.ro/app/webroot/files/userfiles/files/41305095559.pdfIn PDF document text
    • http://krakow4you.pl/krakow/files/dodenitimo.pdfIn PDF document text
    • http://frigotechreina.com/userfiles/files/lozutulujabobejovaxadulo.pdfIn PDF document text
    • http://nfc.soo.jp/file/kagikapeboxisez.pdfIn PDF document text
    • https://daluxerealty.com/wp-content/plugins/super-forms/uploads/php/files/hqa08m39jbsaj7u30mia6md521/86864602274.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/np46cnag89vo9jfebqo149lve3/61521086507.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=ms+access+update+query+multiple+tablesPDF 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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE98 17252 bytes
SHA-256: de1c578a54a8d0d37a98e58d17a4f1cbfafda9ca71ec3d616350f71bf7eafa18
font_01_sfnt_off00010bc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BC2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000123d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123D9 10944 bytes
SHA-256: 19a2b09072f39748b25476aa769349bb38824175cfaee1abc56014c8daef608a

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