Malicious PDF — malware analysis report

Static analysis result for SHA-256 716a30cce37bf91a…

MALICIOUS

PDF

96.8 KB Created: 2021-06-26 21:43:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: d169c5dfd6e98253747beed0bb9bab8e SHA-1: 6b619febee7cb51d8fbb52bb8eedd310b934c649 SHA-256: 716a30cce37bf91ad63889effb03c55caa19e7fc929a8f79a539eb09d0f92a30
156 Risk Score

Malware Insights

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

The PDF contains a link farm directing users to multiple compromised WordPress sites, which in turn host further PDF files. This behavior is indicative of a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly support the malicious nature of this document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

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://bandai-k.com/userfiles/file/mudupumufuvokavawumame.pdf In PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fd754a2207---30357628012.pdfIn PDF document text
    • https://floridaholidayplanner.com/wp-content/plugins/super-forms/uploads/php/files/c8b1dc773ebc17b177f81a6a68967a76/60285855352.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e875f20418---tosovugulevikazon.pdfIn PDF document text
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/276b454a4f2c8335657200ce2a2318ff/kidafusetixaxidosagidevut.pdfIn PDF document text
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160cf82059816b---vagomovopodorijitu.pdfIn PDF document text
    • http://alhouti.com/userfiles/file/kurifofiwise.pdfIn PDF document text
    • http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160bb3461c4e67---68619595077.pdfIn PDF document text
    • http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5dddf58b47---dozagi.pdfIn PDF document text
    • http://midiabyz.com/wp-content/plugins/super-forms/uploads/php/files/4b44b5951d0660fe26f2a591814c2846/mifewiti.pdfIn PDF document text
    • http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16092742e59c10---nusisetimi.pdfIn PDF document text
    • http://wadirumshootingstars.com/userfiles/file///makodirirod.pdfIn PDF document text
    • https://bandai-k.com/userfiles/file/fokuloloridabibanojuz.pdfIn PDF document text
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607bc22e81c91---86706374296.pdfIn PDF document text
    • https://bangprice.com/bangprice.com/beta/cms_image/file/nimutebor.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/7718573736.pdfIn PDF document text
    • http://findmealocalpainter.com/insurazon/admin/userfiles/file/tebemexufosa.pdfIn PDF document text
    • https://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/b4se1k4i2jnubfo407c2tf48im/67675261615.pdfIn PDF document text
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fb3b738167---sariwimagulejinukudefenuz.pdfIn PDF document text
    • https://bechtoldpaving.com/wp-content/plugins/super-forms/uploads/php/files/bba3b1be3c8eeb5054f2e3516d0479a3/dedenaw.pdfIn PDF document text
    • http://pcmcpropertyblog.com/wp-content/plugins/super-forms/uploads/php/files/9dc0df96c216709590c4890502c8a67a/rugabeguxilelejojipana.pdfIn PDF document text
    • https://agroadvanced.com/app/webroot/newsletters/editor/files/92346791153.pdfIn PDF document text
    • https://ontime-taxi.kg/wp-content/plugins/super-forms/uploads/php/files/fed5755a70766891aed03a824fd865c7/gorilofujajexege.pdfIn PDF document text
    • http://navigator-nsk.ru/userfiles/file/jizev.pdfIn PDF document text
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/b9e66b36b7fae052984651596aabcb64/46130748528.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=mens+long+hairstyles+for+straight+hairPDF 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_off00011725.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11725 17016 bytes
SHA-256: a82984cfa493bd1812099f10370901bd0c894050a2441a70a37033a80fd65f9a
font_01_sfnt_off00014384.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14384 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00015b9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15B9B 10600 bytes
SHA-256: e919e442d4c987fad435312b04be6c4ca267dee679c671bb9dbb5ac7e00d9e8e