PDF malware analysis — malicious · 9bd33b847961b21b

MALICIOUS

PDF

113.0 KB Created: 2021-07-05 18:57:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05

MD5: b1ee8e8c63e74c335469475582cabea2 SHA-1: 3aa2b268a758d9ffe9efff2a98a85428a8442c80 SHA-256: 9bd33b847961b21b48eab6b7b87a4bdfcff1ee9372f370d5b751426bbe3853a6

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 ClamAV detection and an ML classifier. It contains a link farm pointing to compromised WordPress uploads and disposable hosting, suggesting an attempt to distribute phishing content or malware. The presence of numerous external URIs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic indicate a focus on directing users to potentially harmful external sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9330

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://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/79e124ea078527547a6357a95de69c95/44114128017.pdf In PDF document text
- https://argekaucuk.com/nbg/upload/files/39087455821.pdfIn PDF document text
- http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160a4ac17d0799---mudatozusidewanagilozate.pdfIn PDF document text
- https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608064737aa1b---85571018800.pdfIn PDF document text
- http://bezpieczna-strefa.pl/wp-content/plugins/super-forms/uploads/php/files/2c4734f123941af8375c64feac3288dd/kigikatolalipepi.pdfIn PDF document text
- http://gfhs1978reunion.com/clients/56625/File/62275365782.pdfIn PDF document text
- http://eksan-ltd.com/userfiles/file/86812592427.pdfIn PDF document text
- https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095fb3da0af1---73498832149.pdfIn PDF document text
- https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/c06b612ad4cf6a5a8e98ba5a563ef119/8424822361.pdfIn PDF document text
- http://watthaistuttgart.de/userfiles/file/66431988287.pdfIn PDF document text
- https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ef70124159---82945317350.pdfIn PDF document text
- https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160853e2a8a6b3---titimexeva.pdfIn PDF document text
- https://primewestelectrical.com/wp-content/plugins/super-forms/uploads/php/files/fe639ad1face7df6a3e9a7c3617e66b1/luloputokenaluxinekifefob.pdfIn PDF document text
- https://weinquartier.at/wp-content/plugins/super-forms/uploads/php/files/523c509ccd3c9e6798c17612ea0ccb6a/96463212233.pdfIn PDF document text
- https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c484a94ad1e---60160394040.pdfIn PDF document text
- https://www.adcgrain.com/wp-content/plugins/super-forms/uploads/php/files/2c18bd5b09f40d736f3cc797ce418451/79606602241.pdfIn PDF document text
- http://bioscipublisher.com/files/upfiles/file/48523432213.pdfIn PDF document text
- https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/56ab1277e7895a2847215f6180f597d5/zetizozotemenetefep.pdfIn PDF document text
- https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/b57894df29009195a4ecd2bee29dacf0/lotapefinugukusowe.pdfIn PDF document text
- http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dd8ffded0ee---51352833594.pdfIn PDF document text
- http://techsystem.gr/data/uploads/ckeditor/files/80790678480.pdfIn PDF document text
- http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160bee7aa63338---jizes.pdfIn PDF document text
- http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/957a75e3a168fc2a0309492d978f131f/gisajifipagutevujes.pdfIn PDF document text
- http://albatrossmrn.com/konadnew/userfiles/file/16929509077.pdfIn PDF document text
- http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afc5cf89556---vulojimuzapo.pdfIn PDF document text
- http://ahlhy.com/uploads/file/050846582625.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=idle+arena+clicker+heroes+mod+apkPDF 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 5

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000eeb1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEEB1	10724 bytes
SHA-256: `3400705a1d13654dfe7cbb81f4c96fd1998b5f5b16cd6be0483f27a6b0bf014a`
`font_01_sfnt_off00010708.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10708	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00011f16.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11F16	20524 bytes
SHA-256: `e929f5bc79f0612177df29ab35a17a9d2dfd4ef4b0792dc746f7268443f25abd`
`font_03_sfnt_off00015a5c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x15A5C	16120 bytes
SHA-256: `d67e846df74fae85413b4dbff1f372ead4194f122dea4de5c3b7eb34fa320503`
`font_04_sfnt_off00016fa2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x16FA2	32864 bytes
SHA-256: `55ad91849425d8beffd482913e095ff47df7ec17e9a56331c70bc932b643e0e7`

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