Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1e0a75b65715bd2…

MALICIOUS

PDF

104.7 KB Created: 2021-09-01 10:47:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: dd36a50f8f5fee8759ad62e97dc16333 SHA-1: a16efbef4b1fb8aa160064f4f865929d3c23d2db SHA-256: e1e0a75b65715bd2fc015f241eeb240ac0e3a1967166a73b21d469e0a3fc2190
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The numerous embedded URLs, many hosted on compromised WordPress sites, suggest a link farm designed to redirect users to phishing or malware-hosting pages. No scripts were extracted, but the PDF structure and URL patterns indicate a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://inwebjor.ru/uplcv?utm_term=customer+service+in+hospitality+industry+pdf PDF link annotation
    • https://www.finestkindcharter.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b69cabeb8f---15921079181.pdfIn PDF document text
    • https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/0ccb5a4d9e134fade308a667eb327a9a/28149431089.pdfIn PDF document text
    • https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/f582896c609bacc3d6e7096001d1b6d0/86939034067.pdfIn PDF document text
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/1c98d8a11d493f1f5ca2fc5e7ef0e784/letoxif.pdfIn PDF document text
    • http://sahamit.net/userfiles/file/runeliropetofakuw.pdfIn PDF document text
    • http://avandcie-energy.com/ckfinder/userfiles/files/fobokejavol.pdfIn PDF document text
    • https://elicopter-de-inchiriat.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160777ebb3dfcf---39110091285.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160818de7cb618---85192307228.pdfIn PDF document text
    • http://mercuresamuichaweng.com/admin/file/48381867495.pdfIn PDF document text
    • http://thuaphatlailongthanh.com/upload/contentFile/minhchau/file/61485951780.pdfIn PDF document text
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/8b60a330947c877149ccbb5c7343385d/98454875661.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/fd14bc6db515fd69dfda6039c5e08386/64102155275.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/d229d26a2d61c58db6d01690da10256f/91762200298.pdfIn PDF document text
    • https://aarushimukhwas.idealviews.com/userfiles/files/jirale.pdfIn PDF document text
    • http://robwalker.net/fckupload/file/86092107401.pdfIn PDF document text
    • https://mdteam.se/ckfinder/userfiles/files/vagelelabafoweroto.pdfIn PDF document text
    • http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1609fe0a85f5ec---58105462494.pdfIn PDF document text
    • http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16129c101a7083---fixuvabajej.pdfIn PDF document text
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/ki0kjl9v4fcg9qpkv7nl74l38i/73914771747.pdfIn PDF document text
    • https://funkydrop.shop/wp-content/plugins/super-forms/uploads/php/files/e5cba0f63f517c01e3f7a24e8e6b6779/63206991132.pdfIn PDF document text
    • http://thermcom.cz/userfiles/file/30639249262.pdfIn PDF document text
    • https://contabil-fiscal.ro/mm/file/fofulejazepi.pdfIn PDF document text
    • http://aeronautike.com/userfiles/file/mebar.pdfIn PDF document text
    • http://www.anieliasfx.com/uploads/textareas/file/69723120402.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_off00012d66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D66 11196 bytes
SHA-256: c4105c527e90c8f39489085f79edc58de29b7b2b57af01a3defaeb682c4fe974
font_01_sfnt_off00014779.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14779 19628 bytes
SHA-256: 8d0839c8b6fb68b0a697719d96ecff709ec9e6c36e0fbb0d55101e1a93c1c289
font_02_sfnt_off00017a70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17A70 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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