Malicious PDF — malware analysis report

Static analysis result for SHA-256 17275b6797a05a2c…

MALICIOUS

PDF

91.6 KB Created: 2021-09-01 01:10:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 8a255ab00d99e870eb1a354f36558d4c SHA-1: 14298eea5b62168adb4bd06132fb9decd05818c1 SHA-256: 17275b6797a05a2cba867f12c4c339bdb8d6c3cb92884823a0a7e816eeb5c0f6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to various domains, many of which are identified as link farms on disposable or compromised hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were directly extracted, the structure and URL patterns suggest this PDF is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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://tenshinorchids.com/FCKeditor_upload/file/vavegifo.pdf In PDF document text
    • http://kmbb.at/userfiles/file/29897797056.pdfIn PDF document text
    • http://optimumnieruchomosci.pl/uploads/userfiles/files/87981401401.pdfIn PDF document text
    • http://torgoborud.org/images/file/xopapupaz.pdfIn PDF document text
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/160ff773fb283e---tokevew.pdfIn PDF document text
    • http://topspeed4wd.com/ckfinder/userfiles/files/liginodagipowaxawiware.pdfIn PDF document text
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/160d89cff27b3f---vugadarek.pdfIn PDF document text
    • http://mobilenmr.com/files/files/54661456524.pdfIn PDF document text
    • https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/n3cpsd5c4ofh99tr5f6j4o57mt/514790160.pdfIn PDF document text
    • https://kovtec.pl/eurostyl/photos/file/75856439216.pdfIn PDF document text
    • https://pasationtravellers.com/root/FCKeditor/file/zenitekusexaxedawig.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16076167db1fc4---1028653398.pdfIn PDF document text
    • http://myshopekerala.com/userfiles/file/23508206739.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c76191ee59.pdfIn PDF document text
    • http://aqbnb.com/uploadfile/file/127758650.pdfIn PDF document text
    • http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608050b602185---94421112303.pdfIn PDF document text
    • http://nusratali.com/userfiles/files/9309807374.pdfIn PDF document text
    • http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1612db51061df1---35230038439.pdfIn PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/1612d69fb98564---63942838434.pdfIn PDF document text
    • https://avflash.nl/upload/files/bepijefesufarilijufute.pdfIn PDF document text
    • https://ahl2005.com/ckfinder/userfiles/files/ritotowitaz.pdfIn PDF document text
    • https://apartmani-mestrovic-krk.hr/files/6244430156.pdfIn PDF document text
    • http://marymo.ru/uploads/files/desak.pdfIn PDF document text
    • https://www.domaine-boussard-chablis.fr/ckfinder/userfiles/files/wolubipesimudaro.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=neck+itch+superstitionPDF 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_off0000fb7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB7D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001138f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1138F 20448 bytes
SHA-256: 6230acfe99f9ec13bf764a5c98e5aeb9499f511e5dc46a50712a80bc074611ac
font_02_sfnt_off00014955.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14955 10432 bytes
SHA-256: dd22c600257343f54f5db6d05b39dbbd4669b80b5bf7bd64cf3625f374f36b93

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