PDF malware analysis — malicious · 2bcde68ef2a57948

MALICIOUS

PDF

79.9 KB Created: 2021-07-04 05:45:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13

MD5: 9f1e644767e297e7b17af0d31b8729c9 SHA-1: 4a03ce17a049631ca5db6a73ba884392860b14d8 SHA-256: 2bcde68ef2a57948d69179261b541ff3ab24af0f7e6a2451004136f34061ff7f

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous links, many hosted on compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate a phishing or trojan payload. The presence of multiple external URIs and a link farm heuristic points towards a malicious intent to trick users into downloading further malware.

Machine Learning

Nyx PDF Classifier malicious score 0.9953

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://queure.ru/uplcv?utm_term=electrical+drawings+pdf PDF link annotation
- http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f3d5f9d488---joxuzekamazetotijomuxix.pdfIn PDF document text
- https://www.oasipizza.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c46b8bc7997---regatedulafumesadapikakap.pdfIn PDF document text
- https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160806ada7625b---7274803822.pdfIn PDF document text
- http://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607e4450ebfd1---7765890041.pdfIn PDF document text
- https://fwullong.com/upfiles/editor/files/zevabagil.pdfIn PDF document text
- http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/c9ab0bdc1f0d011d2053fcd03ec3d5e7/nelujufelatemisif.pdfIn PDF document text
- https://autotrans911.com/thread/admin/uploads/file/97316361997.pdfIn PDF document text
- https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/548tkcj3nsjkq9tn7lf8rco8e9/90767854048.pdfIn PDF document text
- https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608d15c5919a3---lumomu.pdfIn PDF document text
- https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/holvci8b51itqn3lu2uulcipbp/xobijev.pdfIn PDF document text
- http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a126033c3ef---83314514986.pdfIn PDF document text
- https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a87d6f78490---70899792150.pdfIn PDF document text
- http://stylist.in.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160bdb9d86bf01---lewesuzimilan.pdfIn PDF document text
- https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/be4fda98ff0e9e404b39a45b2916bda7/1231856999.pdfIn PDF document text
- https://popa.com.br/wp-content/plugins/super-forms/uploads/php/files/04b67c6721f4433cb6112fd1e69522c1/zedof.pdfIn PDF document text
- http://shqinze.net/admin/upimg/file///64349434601.pdfIn PDF document text
- https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/8bda5385c23c8a8db92eda88a9203d81/580090485.pdfIn PDF document text
- https://cardion.dk/gfx/fckimages/file/niferetujaf.pdfIn PDF document text
- http://mim2010.ru/userfiles/file/sivujaduxotebag.pdfIn PDF document text
- https://tarzminder.com/resimler/files/5464285195.pdfIn PDF document text
- https://cosalesrep.com/wp-content/plugins/super-forms/uploads/php/files/1df5325ea833c0d1328528bd109082cd/pewotajapudu.pdfIn PDF document text
- http://mosvag.ru/img/lib/file/50410192410.pdfIn PDF document text
- https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/3rpi6ket7m60647lnbksnn1jgm/20507023019.pdfIn PDF document text
- http://aklond.com/UploadFilesfile///2021052315492826.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_off0000d53e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD53E	10744 bytes
SHA-256: `1abff2ed765e8be75b2cb5a3efe522c8a3b9f761978d54c11c37266f44969871`
`font_01_sfnt_off0000ede3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEDE3	16664 bytes
SHA-256: `d47676cfa95a2db52128b7214010bc15e73e8d8235ce9f895c7c4f3b98fc1486`
`font_02_sfnt_off000118d0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x118D0	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

Open this report in the interactive analyzer, or submit your own file for analysis.