Malicious PDF — malware analysis report

Static analysis result for SHA-256 1213689513da1a8c…

MALICIOUS

PDF

90.0 KB Created: 2021-07-25 01:08:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: ced2dbb718dca67e0c3ef821b155c4f3 SHA-1: ee1a6b99c338350f479c766821f584e29d1de10d SHA-256: 1213689513da1a8cabd35bd8a7d4431e774c0658f6b1748acec5372939d5415f
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1539 Steal or Forge Credentials

The file was detected as malicious by ClamAV and an ML classifier, and exhibits characteristics of a credential harvesting lure. The document's structure and embedded URLs suggest it is part of a phishing campaign designed to trick users into revealing MFA codes or session tokens. The presence of numerous links to compromised WordPress sites further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://www.beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/67a5c1fc8ccc128553345c9daa64b9f0/gopajonokutumawujosufe.pdf In PDF document text
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607331b0aba5e---nuputafokalivigafi.pdfIn PDF document text
    • https://allcreaturesinc.com/files/files/26268868482.pdfIn PDF document text
    • https://sgdivorcelawyers.com/wp-content/plugins/super-forms/uploads/php/files/5182bfd669d437a33b95aedcbf58e9a6/lowewo.pdfIn PDF document text
    • http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a388802fadb---53255468797.pdfIn PDF document text
    • http://sjhrz.com/images/upload/File/minokanoxuj.pdfIn PDF document text
    • http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/160c49077281ea---ditudigalilamageriwujew.pdfIn PDF document text
    • http://eko-inwest.eu/upload/file/69943303419.pdfIn PDF document text
    • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b290ac740e7---43021913540.pdfIn PDF document text
    • http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/160bd19f57a0a7---rilelimawizodo.pdfIn PDF document text
    • http://kcde.kr/userfiles/file/62758333627.pdfIn PDF document text
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082de625c95a---67749272041.pdfIn PDF document text
    • https://milliondollardesiclub.com/upload_files/featured/files/32732964163.pdfIn PDF document text
    • https://evenimentecastel.ro/wp-content/plugins/super-forms/uploads/php/files/v42k6fisgsmbkdkuoo286p33ma/55213031168.pdfIn PDF document text
    • https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/3fc43f342044819f457a67b848ecfc99/tepuxisawuledodurotese.pdfIn PDF document text
    • https://angkortaxiservice.com/userfiles/file/48507249221.pdfIn PDF document text
    • http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/160a9b57c9cc24---fevogopiwofexodemekiruzun.pdfIn PDF document text
    • http://www.cenlaenvironmental.com/siteuploads/editorimg/file/litevemador.pdfIn PDF document text
    • https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f3eb681336---74385175537.pdfIn PDF document text
    • https://jennysbooks.com/wp-content/plugins/super-forms/uploads/php/files/6217da1abe0c949b1cbd4f29b7ca6edc/silesimokufa.pdfIn PDF document text
    • https://fcksa.com/ckfinder/userfiles/files/momusuzipatelusiwuzadeb.pdfIn PDF document text
    • https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/6acd92b48db209da229e29448c9564a5/ribonawafagudawufujusagi.pdfIn PDF document text
    • http://elementsgogreen.com/userfiles/file/80956981083.pdfIn PDF document text
    • https://www.perfumista.co.uk/wp-content/plugins/super-forms/uploads/php/files/dd8baba1525e48142d6876ca5510ccb5/wuzasaki.pdfIn PDF document text
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/khquh0cn5pc1l2hnsbnm1l7ec7/nenuxutitoxizevom.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=how+to+fill+form+no+10c+for+pf+withdrawalPDF 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_off0000fc1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC1D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001142f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1142F 16964 bytes
SHA-256: 529ecdc021d4a37b24b258720b897c1f7c28a0d6f8cc899c751c45b47ece9361
font_02_sfnt_off00014078.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14078 10836 bytes
SHA-256: f8576e38d5e0e71836c97a0b7e14b22f73389265868a895fe9f2af5d53a13b16

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