Malicious PDF — malware analysis report

Static analysis result for SHA-256 caae56ff4a12176f…

MALICIOUS

PDF

84.2 KB Created: 2021-09-05 00:17:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 814a1277be4df6426a01a00cee235799 SHA-1: 2fc3643e8c210cd8d9eb76ee02773b55544a9181 SHA-256: caae56ff4a12176fd71d2025eae522313ab13e397dbea1e95d21881b5f6f01e5
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file is flagged as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing lure. It contains numerous links to external domains, many of which are associated with compromised WordPress sites or disposable hosting, suggesting an attempt to redirect users to malicious content. The 'SE_PAYMENT_REDIRECT_LURE' heuristic indicates a pattern commonly used in business email compromise scams to trick victims into changing payment details.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://laborke.ru/uplcv?utm_term=marathi+typing+tutor+pdf PDF link annotation
    • http://mobilephleb.com/clients/2/2d/2d2188d13063160162e6e2bbcdac547d/File/kabodisujajazebeva.pdfIn PDF document text
    • http://ttccid.com/userfiles/file/vejazipojopanagizanabom.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3be54db62f---lizafoku.pdfIn PDF document text
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/aor70l88ulcrv9ksj9unp30mq8/36872126913.pdfIn PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608d23cc6bd16---74590491739.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/fifaxabukukuwurukefon.pdfIn PDF document text
    • http://bajcsidavidfoto.com/_user/file/40558681336.pdfIn PDF document text
    • https://basisnomor.com/contents//files/kixewavoxuwowogugivarare.pdfIn PDF document text
    • http://hondaototanan.com/upload/files/7199222382.pdfIn PDF document text
    • http://himalayakebab.com/shipinc/userfiles/files/89668056113.pdfIn PDF document text
    • http://fbrasil.com/userfiles/file///90536342609.pdfIn PDF document text
    • https://jclifeschools.org/wp-content/plugins/super-forms/uploads/php/files/33e2cfb32f582424e971091b12b35d51/velofijafonimuwop.pdfIn PDF document text
    • http://sinhorelli.com/userfiles/file/7655751817.pdfIn PDF document text
    • https://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/16090d42f4ae2e---86967446820.pdfIn PDF document text
    • http://mindentudor.hu/userfiles/file/wuwokikerumusakelosovila.pdfIn PDF document text
    • http://cdmvt.cz/sites/default/files/ninunevojiweganej.pdfIn PDF document text
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/160de1c5edd823---24912576321.pdfIn PDF document text
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f7ccae6d4c---40137057855.pdfIn PDF document text
    • http://bellina.pl/userfiles/file/sebidikinuj.pdfIn PDF document text
    • http://eperon-kochersberg.com/img_db/95314005430.pdfIn PDF document text
    • https://fedico.ca/upload/editor/file/tubumonot.pdfIn PDF document text
    • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/55ce2e91ff9e1f0cfb90b9483caf56b5/lizolaxabinepazox.pdfIn PDF document text
    • 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_off0000dd3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD3D 20484 bytes
SHA-256: 815ab2626562f869ec5943857ca0a4b50969500d00244f8bc57d88e2d80a61bb
font_01_sfnt_off000113ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113BA 10640 bytes
SHA-256: 2c89e4af357bf8163808385531a8329e80f4ecf29419c3a9fd3b1b2fccca95fc
font_02_sfnt_off00012bd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BD1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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