PDF malware analysis — malicious · d8dda31e6ee05eec

MALICIOUS

PDF

89.2 KB Created: 2021-06-30 10:49:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05

MD5: e2d37364ebdd9ec79975e9debf95cd4a SHA-1: a188a6d0c96a098f8d8375b562c6dff29da1a60b SHA-256: d8dda31e6ee05eec51db7d951a538fa25498220e7ba36830ef51d657fb66ef7f

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1055.012 Process Injection

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, with multiple URLs pointing to compromised WordPress sites. These links likely serve as a lure to redirect users to phishing pages or download further malware. No scripts were extracted from this sample.

Machine Learning

Nyx PDF Classifier malicious score 0.9822

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://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072b8078b951---litej.pdf In PDF document text
- https://forex-robo.org/wp-content/plugins/super-forms/uploads/php/files/902f37a48aba85a9a14487f0fa03c01d/1478549906.pdfIn PDF document text
- http://petraifevronii.ru/ckfinder/userfiles/files/wojekanilarefitiwo.pdfIn PDF document text
- https://www.movingwithmagna.com/wp-content/plugins/super-forms/uploads/php/files/303011a8fcbe35d02554c84910e19fa9/sejubejizefobelo.pdfIn PDF document text
- https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/3f709d03858bb3a246c12466da6e1b58/52972088907.pdfIn PDF document text
- http://aliglobshop.com/userfiles/file/pusitizakun.pdfIn PDF document text
- http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a6c0600e738---mowofawovunozetopesoxaf.pdfIn PDF document text
- http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608157f5130ef---60830765357.pdfIn PDF document text
- http://maxtarget.by/ckfinder/userfiles/files/biwuzopowamevaribajela.pdfIn PDF document text
- http://lblussana.it/images/file/66155886731.pdfIn PDF document text
- http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160a24a068f754---jimibun.pdfIn PDF document text
- http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/1607d9a3dd5629---6939250162.pdfIn PDF document text
- https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/17a06f7d89af5ebfcf69e42f30fc9fc5/56266277896.pdfIn PDF document text
- http://thelonerangerfanclub.com/ckfinder/userfiles/files/68233526108.pdfIn PDF document text
- http://dienmaythanglong.org/uploads/files/74547848113.pdfIn PDF document text
- http://adaviestransportltd.com/userfiles/file/3297468575.pdfIn PDF document text
- https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d5fccea0f45---20788418042.pdfIn PDF document text
- https://flardochform.se/userfiles/file/17172974261.pdfIn PDF document text
- https://samsungdvmklima.com/upload/ckfinder/files/46955075731.pdfIn PDF document text
- http://myshopekerala.com/userfiles/file/27898641278.pdfIn PDF document text
- https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/9658f92b2fedaf9ae43a0ef1c13970f5/84090939872.pdfIn PDF document text
- http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbd15464d4---23067237353.pdfIn PDF document text
- http://balogmihaly.hu/UserFiles/file/bajoputimalevatepar.pdfIn PDF document text
- http://brighterhealthcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/0lrpog68tdj6e6fl269i7vb863/nezutase.pdfIn PDF document text
- https://www.explosivo.gr/wp-content/plugins/super-forms/uploads/php/files/cf689d6f0a8d5a86258126b3c5eb4d88/newinapugiri.pdfIn PDF document text
- https://alarouba.com/ckfinder/userfiles/files/zixuxolora.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=planet+fitness+free+weightsPDF link annotation
- http://s292376414.onlinehome.fr/datas/imgmail/file/netajinur.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_off0000f9f6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF9F6	17344 bytes
SHA-256: `5d1ccbfc4d44a944d09f42c504f4bc39f5d1d3900264d1f011141203ce4d23da`
`font_01_sfnt_off0001279c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1279C	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00013fb3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13FB3	10460 bytes
SHA-256: `0f9d810b967d5440e0c8cb83dac75c60f5c79a7f24800b1cfcd4dde7429178f6`

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