PDF malware analysis — malicious · b0c6ac7921dd51a8

MALICIOUS

PDF

89.4 KB Created: 2021-06-29 05:55:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26

MD5: cb8b58fd8df410b45c5be673cffbdf56 SHA-1: b292fd07170fe0dc0dbbf5d9588905407e5aa549 SHA-256: b0c6ac7921dd51a8657cc208d9e1c461b51290bfc1eb987563bdf6f8aeeb8afc

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to redirect users to malicious content. The embedded URLs and the nature of the heuristics strongly indicate a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9942

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://allytemp.ru/uplcv?utm_term=black+wolf+names+male PDF link annotation
- https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098c606de5aa---84706831628.pdfIn PDF document text
- https://agrimal.pl/userfiles/file/96918833574.pdfIn PDF document text
- https://dgaspcsm.ro/ckfinder/userfiles/files/93272997917.pdfIn PDF document text
- http://righetti-ticozzi.it/userfiles/files/mesofodikojotemata.pdfIn PDF document text
- http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160983cd5b9470---35159944951.pdfIn PDF document text
- http://studiofranzoni.eu/userfiles/files/26065233981.pdfIn PDF document text
- http://lev-steklo.ru/userfiles/file/mexajenijofis.pdfIn PDF document text
- https://primewestelectrical.com/wp-content/plugins/super-forms/uploads/php/files/6eaa7aca693b78222fffc99fdde94349/totopofiruwivez.pdfIn PDF document text
- http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bcf88f71173---28191808838.pdfIn PDF document text
- http://sp3siemianowice.pl/userFiles/files/11571701883.pdfIn PDF document text
- https://engineeredrepinc.com/wp-content/plugins/super-forms/uploads/php/files/269d9aeb01aaf30adf778e45674be3ef/81246351512.pdfIn PDF document text
- https://sgpropertylawyers.com/wp-content/plugins/super-forms/uploads/php/files/19e1d6f5d1576446a2e5612f49a7f954/23384450627.pdfIn PDF document text
- http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607778f8cd1e1---52569407888.pdfIn PDF document text
- http://botosani.ro/img/uploads/file/vopoguditesurafagadalag.pdfIn PDF document text
- http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608bf1fd99252---sowewox.pdfIn PDF document text
- https://cplastik.cz/data/cms/file/43559125844.pdfIn PDF document text
- https://plswa.com/wp-content/plugins/super-forms/uploads/php/files/f62a6157b0139c536578275541ab7df0/67084743564.pdfIn PDF document text
- https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160c965bd79d75---17581668560.pdfIn PDF document text
- https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/844e5f7ebf6598755102b87d1984f56d/gukidebifijurotinaki.pdfIn PDF document text
- http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160765c20f1314---35380443130.pdfIn PDF document text
- https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/n5egrch13pa4rt25g37i40jjp4/30165045526.pdfIn PDF document text
- http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a150de6d86e---24383948680.pdfIn PDF document text
- http://winterwonderlandzundert.nl/uploadimages/files/bonusozamile.pdfIn PDF document text
- https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/f4aeec6a464218c3f7fe8f8706341209/tutowugarelomeziviworilif.pdfIn PDF document text
- http://dlmberatung.ch/userfiles/files/ramikawedajirulufugevaz.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_off0000f70f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF70F	18708 bytes
SHA-256: `3055c6a5564f29eaa97e7544e03f99a34f984cd904231b7e9915eb0bbf4f969d`
`font_01_sfnt_off000126d6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x126D6	10440 bytes
SHA-256: `45cb51c7f7f8380bde7b01e6c76c3db41968fcea00ed059cc090d9a318f26d62`
`font_02_sfnt_off00013ea0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13EA0	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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