Malicious PDF — malware analysis report

Static analysis result for SHA-256 67028295813a165f…

MALICIOUS

PDF

77.3 KB Created: 2021-06-29 17:47:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 995286d9e7eda9c0b11825e4881501b1 SHA-1: b36721ac780ff3d46aa841b22705097fa268a510 SHA-256: 67028295813a165fe6c594327f6e2d4222c230ef3779d6b9677b63dc56a185aa
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1539 Steal Application Data

The PDF contains multiple links to external sites, many of which are hosted on compromised or disposable domains, suggesting a link farm for phishing. The 'SE_MFA_LURE' heuristic indicates the document is designed to harvest credentials by impersonating multi-factor authentication prompts. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with credential phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://youstore21.com/wp-content/plugins/super-forms/uploads/php/files/49ddbc1ff572e815813a124a81723407/zokimojekifelusutojibik.pdf In PDF document text
    • http://northphoenixmustangs66.com/clients/4/4b/4b49b54eec06ebba3741256e9f3e6f2b/File/sekulurabibuwevufuninarog.pdfIn PDF document text
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160788e3e727d4---20159639400.pdfIn PDF document text
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a160bcf363d---71071097641.pdfIn PDF document text
    • https://podimercrm.com/img/files/53194352450.pdfIn PDF document text
    • https://www.perfumista.co.uk/wp-content/plugins/super-forms/uploads/php/files/15ed17665aa7cb8b8c9ca1115208d58f/17098349934.pdfIn PDF document text
    • http://njuhome.pl/ckfinder/userfiles/files/jawebim.pdfIn PDF document text
    • https://fid-data.fr/app/webroot/uploaderfiles/92219901019.pdfIn PDF document text
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/ed1337c91835245a78e99390af19d416/7942564534.pdfIn PDF document text
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f1eef1650e---22565208608.pdfIn PDF document text
    • https://synersys.fr/contenu/file/wapukoruved.pdfIn PDF document text
    • https://www.sidertest.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607cc9ca66dfd---pofeburojuwegovun.pdfIn PDF document text
    • http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/59767e20ffe2635684c62e2e1a5b947b/zagupitudarezowapupenutu.pdfIn PDF document text
    • http://workprohealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092745e8d221---21685936424.pdfIn PDF document text
    • http://fitnessklub-impuls.pl/uploads/assets/file/fumifekupufedenajogajavom.pdfIn PDF document text
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fe4b0cc948---mekatofikuwelew.pdfIn PDF document text
    • http://www.festivalmarrakech.info/wp-content/plugins/formcraft/file-upload/server/content/files/16094990b79349---fijaturulapukefo.pdfIn PDF document text
    • http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091bb5a6cc9d---kuxuneb.pdfIn PDF document text
    • http://alliance-ic.ru/uploads/file/jupopuwunolukagoze.pdfIn PDF document text
    • http://jnnycc.org/userfiles/file/gutupitevotakitelonejatag.pdfIn PDF document text
    • http://aptchasers.com/FCKeditor/userfiles/file/84042286092.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=design+a+sequence+diagram+for+bank+atm+machinePDF 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_off0000cbde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBDE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e3f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3F0 16160 bytes
SHA-256: ca778a18b0e335546482a5279680c606f914bd3a6f67bfd839e528e8e49da340
font_02_sfnt_off00010db1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DB1 11356 bytes
SHA-256: 3afa2620cc0506bd3c4f13a922fe086fb4aa278d77409508bd71ebdd34f71a5b

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