PDF malware analysis — malicious · 5d86aadffb39a7bb

MALICIOUS

PDF

79.8 KB Created: 2021-08-18 15:15:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18

MD5: 2f0dd294d42dc496f1e969d94a829809 SHA-1: 47ef91aa153ba18760bf9660760ed23b85e7587d SHA-256: 5d86aadffb39a7bbfffd96b9674e52c0d1d94ed32091733a893c3d220ff20972

156 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9975

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://krisoc.ru/uplcv?utm_term=complete+psionics+handbook+3.5+pdf PDF link annotation
- http://aajude.pt/backoffice/ckfinder/userfiles/files/noxoxakidemozotiwafuxazi.pdfIn PDF document text
- https://juhaszautovill.hu/userfiles/file/5995587416.pdfIn PDF document text
- http://mousike.it/img_ins/files/gumijugobotujako.pdfIn PDF document text
- https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/08e44e119195abe9897dea5107b9345d/kenujok.pdfIn PDF document text
- http://ballarioarchitetti.eu/userfiles/files/50611035383.pdfIn PDF document text
- https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/612a39dcc1bd705890c0e5471477b75a/romidesiwutuvus.pdfIn PDF document text
- https://all-stage-meditation.tw/uploads/files/60fdec3b1f4ba.pdfIn PDF document text
- https://serka.com/serka/upload/files/ginarigakopigibof.pdfIn PDF document text
- https://solener.info/ckfinder/userfiles/files/jegupafanatojukabutomid.pdfIn PDF document text
- https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607c3af23e771---92480439294.pdfIn PDF document text
- http://zonweringbelgie.nl/ckfinder/userfiles/files/94078478915.pdfIn PDF document text
- http://budaikepkeret.hu/uploads/file/79741746108.pdfIn PDF document text
- http://beetsom.com/PROGRAM_FCKeditor_UserFiles/file/1964085338609ddb1224a72.pdfIn PDF document text
- http://esistore.be/userfiles/file/munotowaviradolofasafe.pdfIn PDF document text
- http://rem-stroymont.ru/img/file/jarusutagabomas.pdfIn PDF document text
- http://cartonwrappingmachine.com/userfiles/file/41154439256.pdfIn PDF document text
- https://opuntia.eu/wp-content/plugins/super-forms/uploads/php/files/de36c7ad8df9e1a6f8c73f08c27018fd/sawoluxezinupoduf.pdfIn PDF document text
- http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/bb0f3efdf28d2c16a4f323ba10876210/wutinizunowigar.pdfIn PDF document text
- http://iberryhomemade.com/userfiles/files/vekejobiperugejozel.pdfIn PDF document text
- http://banghaija.com/userfiles/file/nevipetifo.pdfIn PDF document text
- https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/c0f9b0475c9ec65aeb07a9a03e87bbe3/nozaduxufolomabujoxibijow.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d3b8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD3B8	16748 bytes
SHA-256: `0015e2eb295e9aea2c4b274fce6754e2762f982e327babee2b024c7b9be4f6f4`
`font_01_sfnt_off0000ff60.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFF60	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00011777.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11777	11420 bytes
SHA-256: `962fad8b7b45b1e8995cd7dff992040dafe2f0ab4d892b4f16961850d851f409`

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