Malicious PDF — malware analysis report

Static analysis result for SHA-256 b082a3efa082be67…

MALICIOUS

PDF

88.0 KB Created: 2021-07-31 14:32:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 7db328ab068c65855ae69ce645b3e9b8 SHA-1: e023102626f5135f0dc1234347a30c04d07fbbd1 SHA-256: b082a3efa082be670339a9eab313894978b9b5e526312d8cb5005e924c5cbe25
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF file detected by ClamAV as Pdf.Phishing.Trojan. It contains an embedded JavaScript stream and a link farm pointing to multiple external PDF files hosted on compromised WordPress sites and other disposable domains. These elements suggest the PDF is used to redirect users to malicious content, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://al-farh-iq.com/upload/userfiles/file/76422778003.pdf In PDF document text
    • http://ameshamagazine.com/js/upload/files/nexuxowudikikow.pdfIn PDF document text
    • http://fritz-fahrlaender.ch/download/nifubamiru.pdfIn PDF document text
    • http://campbellelectronics.com/uploads/kewuzuxikilejolirobasu.pdfIn PDF document text
    • https://newline-eg.com/userfiles/file/vakajinakuvuboritogutowik.pdfIn PDF document text
    • https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/dba8a025be5e51622fb360d47d2c1aff/33664320426.pdfIn PDF document text
    • http://softtox.com/new/userfiles/file/selasur.pdfIn PDF document text
    • http://gorisum.net/fckeditor/upload_file/file/39091537353.pdfIn PDF document text
    • http://studiolegalezullo.eu/userfiles/files/56219088242.pdfIn PDF document text
    • http://www.portofmiamitunnel.com/system/js/back/ckfinder/userfiles/files/98578927203.pdfIn PDF document text
    • http://chroscina.com/userfiles/file/23629307026.pdfIn PDF document text
    • http://abaj.cz/UserFiles/File/larimarir.pdfIn PDF document text
    • http://hamdard.com/hamdard/app/webroot/img/ckfinder/userfiles/files/58335895726.pdfIn PDF document text
    • http://ciaooo.ru/uploades/userfiles/file/giveparali.pdfIn PDF document text
    • https://njsolarpower.com/wp-content/plugins/super-forms/uploads/php/files/69ca463080c3beff3f809dc1bd6ae16d/kelugixomisorimofexuzubaw.pdfIn PDF document text
    • https://ultralloy.net/upload/files/98333915513.pdfIn PDF document text
    • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/0qemdofjv4mgd1ugbfn5vk2rae/xalawutosokekemebokinat.pdfIn PDF document text
    • http://mevlanaasm.com/resimler/files/88094891479.pdfIn PDF document text
    • http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160911ebbb8af0---36222311339.pdfIn PDF document text
    • https://ecoinkworld.com/wp-content/plugins/super-forms/uploads/php/files/d4e25aa94e8a97af05cf6fc6bf904b5a/kudigu.pdfIn PDF document text
    • http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609763b2ee209---51742796143.pdfIn PDF document text
    • https://alternativecarrepair.com/userfiles/file/15759002448.pdfIn PDF document text
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160e7d45bef7c4---68875129442.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=como+cambiar+de+color+las+carpetas+de+windows+10+sin+programasPDF 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_off0000f2b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2B5 11288 bytes
SHA-256: 0903f1992a53bcc336aea0b4cab6949a645c84e647e7bd24f95053e7c96c3f64
font_01_sfnt_off00010ceb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CEB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000124fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124FD 16884 bytes
SHA-256: 6c263dffd820ada1e0d9515e970ae8a48a67985b371cead45763c3767e5c0bb0