Malicious PDF — malware analysis report

Static analysis result for SHA-256 72bf7c5868cd5d84…

MALICIOUS

PDF

106.4 KB Created: 2021-09-04 06:05:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 8a50648002a44d7fa271e2fc32223704 SHA-1: a5c30e248b5ddbc20ab519c52de632706e135ee2 SHA-256: 72bf7c5868cd5d840de01a95676a8d608a0e0954d02f9726a45c7a1d49994f8c
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9885

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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 http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160e3998567b73---62968883139.pdf In PDF document text
    • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/16120f16c76477---kigenozatup.pdfIn PDF document text
    • http://www.ecostroyservis.ru/File/63119703154.pdfIn PDF document text
    • http://cctechlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/26293000791.pdfIn PDF document text
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a8d2004c08---74965810023.pdfIn PDF document text
    • http://elsekmont.eu/userfiles/file/39735097939.pdfIn PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/16130ef4860430---baxozerubomawizisirave.pdfIn PDF document text
    • http://xn----7sbbbizu2bxaod.xn--p1ai/userfiles/file/mamixe.pdfIn PDF document text
    • http://joshuadacosta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc8d9fa5d0e---woboniwutotitopimokike.pdfIn PDF document text
    • http://gramercy-grand.ru/files/file/wujimufulibutu.pdfIn PDF document text
    • https://akapacha.com/userfiles/file/82634753753.pdfIn PDF document text
    • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/df0d43d6f80c03f351360f82c1c14969/43405656510.pdfIn PDF document text
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e70b56f840---96690959545.pdfIn PDF document text
    • https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c63697670be---sezoxuvirulutemevo.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607a18df19bf0---15970952563.pdfIn PDF document text
    • https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/8308a3b36e0fac8015d7bda75a2b4e9f/pixawepaguwevasatul.pdfIn PDF document text
    • http://studiogaleazzo.eu/userfiles/files/859777580.pdfIn PDF document text
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b520c736410---jipumipetik.pdfIn PDF document text
    • http://gojjang.com/uploads/files/fakepakazimemimolelof.pdfIn PDF document text
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/160f544baa8ead---xuzurojiguzawawulaze.pdfIn PDF document text
    • https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/6d5c54469d1614c5231d2d977ec8e17b/xabuvilowovijaranakoza.pdfIn PDF document text
    • http://dbjhockeytournament.com/clients/f/f9/f9ff496842c877cbb4522510b668f2a2/File/wisefuvi.pdfIn PDF document text
    • https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16091d2986dd2a---62764612665.pdfIn PDF document text
    • http://tehnicgaz.eu/files/file/finipevimejidex.pdfIn PDF document text
    • http://kroonzuivel.nl/ckfinder/userfiles/files/62211950282.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=pedagogy+urdu+mcqs+pdfPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11663 23520 bytes
SHA-256: 1039245848e1d62d66d5a6c32b81a00ef541c65c813fc66839534e40d18424c5
font_01_sfnt_off00015496.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15496 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00016ca7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16CA7 16172 bytes
SHA-256: 750240ec5fe61e3afaa03d095b52ec321b2e4816eeb95a37e20da72ca99d4c5c
font_03_sfnt_off00018255.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18255 10984 bytes
SHA-256: 983a116c7a2b6916c10b25937e4481b5c5718c3f2c86ee02a2a1cfcc5dfee1af