Malicious PDF — malware analysis report

Static analysis result for SHA-256 5962e1c8661ece5c…

MALICIOUS

PDF

91.5 KB Created: 2021-07-06 20:09:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 68e8b05c1285d8563b2793f7ba47e1ad SHA-1: 5015ffab9ea33bdae341d0992b4939cd042626ce SHA-256: 5962e1c8661ece5ca72f011c191d22c55a2b9d757491d90cd6004b3c712bd142
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. It contains a link farm pointing to numerous distinct hosts, many of which appear to be compromised or disposable. The primary purpose seems to be directing users to potentially malicious content hosted on these sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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 http://secohthailand.com/file_media/file_image/file/fajazujodawozenedemu.pdf In PDF document text
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/0bcd88a2eb9521f51349002992c1ee70/54970603085.pdfIn PDF document text
    • https://oklogistic.lv/upload/file/mawodinadulisuxetegesenil.pdfIn PDF document text
    • https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/28b101cb50b0485241ba0796b955925c/55006934213.pdfIn PDF document text
    • http://toptoptraining.ru/img/upload/file/92413814848.pdfIn PDF document text
    • https://www.couleurs-et-jardin.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607a8c1c6e5be---84134179611.pdfIn PDF document text
    • https://liniagdanskzydowo.pl/files/kolikivigobojirobolu.pdfIn PDF document text
    • https://slaterlighting.com/wp-content/plugins/super-forms/uploads/php/files/18de24b473c0671339707f777e75973c/70400374031.pdfIn PDF document text
    • http://capmar.eu/userfiles/file/wufobemofurokizujana.pdfIn PDF document text
    • http://commune-bourre.com/userfiles/file/71433627281.pdfIn PDF document text
    • http://firmykominkowe.pl/Obrazki/edytor/file/muvojilemogobonikijoxak.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fbd078476b---gavefopupikudizumigijoze.pdfIn PDF document text
    • https://beribuket.ru/wp-content/plugins/super-forms/uploads/php/files/164ab9367379230ccbc37622a60e9a27/zidebokuzomidok.pdfIn PDF document text
    • https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/48906ef16405b6e264f3f7b158219df0/55932934494.pdfIn PDF document text
    • http://2ds-creations.fr/userfiles/file/30229531155.pdfIn PDF document text
    • https://homecareangels.ca/files/files/files/61821195079.pdfIn PDF document text
    • http://physocare.com/Images_upload/files/gutaz.pdfIn PDF document text
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/ee6c634115e8213f29f98f96806a3c2a/25254529086.pdfIn PDF document text
    • http://shriadinathbank.com/uploads/pukepusemuzu.pdfIn PDF document text
    • https://www.zulilighting.com/wp-content/plugins/super-forms/uploads/php/files/eb475bdd1c41f34c524761a9cee02af3/69063257089.pdfIn PDF document text
    • http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090714528f58---denuguzeposa.pdfIn PDF document text
    • http://lucann.com/Upload/file/xotajupevij.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=harry+potter+invitation+to+hogwarts+templatePDF 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_off000100ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100EC 17124 bytes
SHA-256: a04e8713509450a9f62e88c34ca48bd683239a2f2def21653b73f0a9f4c8a448
font_01_sfnt_off00012d83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D83 10956 bytes
SHA-256: bae732c8012345df0a48f0d7e03d07a6cfa3142b6a676eb9ebfd28978d75e366
font_02_sfnt_off000146c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x146C4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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