PDF malware analysis — malicious · 425c4d3f67007233

MALICIOUS

PDF

85.5 KB Created: 2021-07-18 14:35:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15

MD5: a9fcefde39ea3d1ae7655c786ed1cbc3 SHA-1: 6fb1e9e4d1ec071dd9296877a68ff4354117c81c SHA-256: 425c4d3f6700723352e53a909a395e79266dcd9c87bfb31dac514a766c16256b

196 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9860

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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK

PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073d3638f25e---komasaxorafe.pdf In PDF document text
- https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a09a1f84c98---14655323311.pdfIn PDF document text
- https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/63c6ac2422a09c52dd8494517ca2264e/mofoga.pdfIn PDF document text
- http://jyjwqj.com/uploadfile/file///2021061012010171.pdfIn PDF document text
- http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160cd1a85636eb---jojigamevo.pdfIn PDF document text
- http://memsports.com.br/admin/libs/ckeditor/ckfinder/files/jogiziporivuwipitan.pdfIn PDF document text
- https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/d6c8fbede280aad1789a7a5e02a796a4/61576808387.pdfIn PDF document text
- https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/3e3590ee3767599be6824d72a56f8c49/50509207098.pdfIn PDF document text
- http://clinicaveterinariacittadivignola.com/userfiles/files/92145090143.pdfIn PDF document text
- https://accesoriosalmayor.com/images/userfiles/file/56956047665.pdfIn PDF document text
- http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d1960a8a53---75906162616.pdfIn PDF document text
- http://ifaistos.reality.gr/~triantaf/images/file/muwuxirukunagubotupanoj.pdfIn PDF document text
- http://cuacuongiare.vn/upload/files/28060477016.pdfIn PDF document text
- http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16074caebeb1e2---34911550364.pdfIn PDF document text
- http://xn--42c1dhzaq5aeb.com/userfiles/files/vawudor.pdfIn PDF document text
- https://vasutaszeneiskola.hu/ckfinder/userfiles/files/71717078346.pdfIn PDF document text
- http://evevoyance.fr/adh/.-/file/tujepurutegeriza.pdfIn PDF document text
- http://secretinvitation.net/images/files/kinenijarovox.pdfIn PDF document text
- http://cityhelps.org/clients/6/61/61afa7a028a8e04f14432b0fece6f2b0/File/91464422804.pdfIn PDF document text
- https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ede7f49791f---67599756097.pdfIn PDF document text
- https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/65ff1daaaf422e0fb4b575f204fd8498/11870324954.pdfIn PDF document text
- http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a9ede2353ae---faxujumutubazowif.pdfIn PDF document text
- https://www.perfumista.co.uk/wp-content/plugins/super-forms/uploads/php/files/adbd57129bf1e8e0ff8e8791e97c2b5e/74452775675.pdfIn PDF document text
- https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/160943b8b7e24d---vivovomanadidup.pdfIn PDF document text
- http://birnagarcollege.in/userfiles/file/xebusaferotel.pdfIn PDF document text
- http://www.empresasdelimpeza.info/wp-content/plugins/formcraft/file-upload/server/content/files/160c575578752c---83471498004.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=oxford+english+dictionary+text+filePDF 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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e7c4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE7C4	17392 bytes
SHA-256: `febfbf8e6cea85b48861e0e7f665f768a9691e519a36eba8d3676f51d23ece68`
`font_01_sfnt_off00011558.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11558	10996 bytes
SHA-256: `4ab5b68a71ce57f54479cf0b5075651ae15460ec69e79f9772f91ad45179fbb3`
`font_02_sfnt_off00012ead.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12EAD	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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