Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e98fb3294cbdeae…

MALICIOUS

PDF

263.0 KB Created: 2021-06-29 05:05:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 657524f6cceaf05f186b9d368ffc2250 SHA-1: b9d4877396c2a0f3e037af6fe1b9de511b3647c9 SHA-256: 5e98fb3294cbdeae3f5a3b57a01d2dce02aeaef6b644b94bf453a0408b221edf
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains multiple links, including one pointing to `https://infrive.ru/uplcv?utm_term=omar+in+arabic+calligraphy`, which is identified as an SEO redirector for phishing. The file also leverages compromised WordPress upload storage for hosting PDF files, indicating a phishing lure designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9400

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • 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://infrive.ru/uplcv?utm_term=omar+in+arabic+calligraphy PDF link annotation
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/f8e420b20b16cc89df58f857fd63ba8f/rutubeduzujapijideni.pdfIn PDF document text
    • https://gbeequestriansurfaces.com/wp-content/plugins/super-forms/uploads/php/files/str1ciso6p71u76l5ebrjf5v28/60512250535.pdfIn PDF document text
    • https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b3636ab40fa---79542523526.pdfIn PDF document text
    • https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/1160b678599a7f4f02eaee1e7c451b6a/77155468014.pdfIn PDF document text
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160909ee982510---rovanoxetojawu.pdfIn PDF document text
    • http://aldo-ins.com/userfiles/file/kufunuvetixi.pdfIn PDF document text
    • http://sklepjola.pl/userfiles/file/28047358760.pdfIn PDF document text
    • http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d1ca10631fe---61734454298.pdfIn PDF document text
    • http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1609e3a9997f65---17433658938.pdfIn PDF document text
    • https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078214fe0107---panagazosinujomesoxum.pdfIn PDF document text
    • https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/1a13182e1dd272603254d88ada49c905/tugujovureguz.pdfIn PDF document text
    • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/0096792ce30f6f35268aaefc57ffcbc9/ragotowexalaxaritu.pdfIn PDF document text
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/16075186438fd1---61390673547.pdfIn PDF document text
    • http://kmsenior.org/file/files/87716394833.pdfIn PDF document text
    • https://wilsonbarrera.com/inicio/wp-content/plugins/formcraft/file-upload/server/content/files/1608bd0ee0a0c1---84041504610.pdfIn PDF document text
    • http://ktcz.eu/files/files/najukizosopolotiveginep.pdfIn PDF document text
    • https://markeishahall.com/wp-content/plugins/super-forms/uploads/php/files/c05574fac6185d3def8516de8b921e22/96565342468.pdfIn PDF document text
    • http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cc98ed80a12---nalozexotuxozufelar.pdfIn PDF document text
    • http://abacusnancy.com/userfiles/file/tesaxasigudisesaxasosakog.pdfIn PDF document text
    • https://serviceservice.eu/userfiles/file/deweba.pdfIn PDF document text
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/1606ceae056958---bukiv.pdfIn PDF document text
    • http://anaminfo.com/attachfile/file/60288022547.pdfIn PDF document text
    • https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/4829c1383f14b6a32bb974745fe76563/valatafasamunaxaxedan.pdfIn PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160815bdca3163---41062709719.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000384ec.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x384EC 25588 bytes
SHA-256: a96662e09fc41517600461644aefff556a2b47308c9eac5080c2d9599c98b721
font_00_sfnt_off00036cdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36CDB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0003b306.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B306 10580 bytes
SHA-256: 7ba05d8c6ece0c344f85eed435a5faab162a4c7d650dd6b5841cea8602d8afca
font_03_sfnt_off0003cab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3CAB7 28400 bytes
SHA-256: 2f2241550057958c9e2b8355d5eeb43952531890621d2bc9a8e840d14facff5d

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