PDF malware analysis — malicious · 3cebcb4b3116c710

MALICIOUS

PDF

74.2 KB Created: 2021-07-02 04:50:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20

MD5: 117c7900e87e21e8f933902864cd6336 SHA-1: 9441e02307d6ef5b4073bdcb8de1dae92eb74283 SHA-256: 3cebcb4b3116c710eab471b2b3e98ca3b9504b9b1c42ba755b7e07c208f0f429

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 and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The file contains a link farm pointing to compromised WordPress upload storage and other disposable hosting, suggesting a phishing or malware distribution attempt. The embedded URLs likely serve as lures to redirect users to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9951

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://aftaplan.com/works/peepsparty/html/upload_files/file/2846954956.pdf In PDF document text
- http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/f0akao6gmcagiabu9cr7sdq5c6/fapebodurijuwibavex.pdfIn PDF document text
- http://aldo-ins.com/userfiles/file/61387005233.pdfIn PDF document text
- http://shssailors1969.com/clients/3/36/366f78b21138e0f8005dfe6cc5e09e30/File/86446851398.pdfIn PDF document text
- http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160871931de26f---gaver.pdfIn PDF document text
- http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e11c53a5e1---40729019167.pdfIn PDF document text
- https://ddshower.com/ckfinder/userfiles/files/powobovewofulitabanokonob.pdfIn PDF document text
- https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/2935be8ac40ee4cfe8cfde01c810b72d/91013138191.pdfIn PDF document text
- http://asu.com.vn/wp-content/plugins/super-forms/uploads/php/files/dqghauj1lugqctvdf3eitvq1g0/68739798655.pdfIn PDF document text
- http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608fbf41deab7---vabukakijezanifeke.pdfIn PDF document text
- http://innotack.com/userfiles/files/subexawesebovukosa.pdfIn PDF document text
- http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606d4a6d7061e---82315182064.pdfIn PDF document text
- http://chocolatycakes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095a312c6d57---41640388572.pdfIn PDF document text
- http://saovietgroup.com/upload/FCK/file/8238164019.pdfIn PDF document text
- https://wamsconference.com/wp-content/plugins/super-forms/uploads/php/files/3dad04765cde2780d24085b1bc8f97dc/82757526000.pdfIn PDF document text
- https://shared401k.com/wp-content/plugins/super-forms/uploads/php/files/3ad5166b1c2e49a30e60aa752a261af9/legevaduvi.pdfIn PDF document text
- https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/aba878a8ca7781f7bbb6088613cd371a/begasemajabozedof.pdfIn PDF document text
- http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160af59a713670---zimulonuxazu.pdfIn PDF document text
- https://nhatngudongkinh.com/upload/ckupload/files/majaxatajawogarekaj.pdfIn PDF document text
- http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160796e9ec1fab---91364454842.pdfIn PDF document text
- https://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/onhu3t5h77q3k1fcki1v9h7ugk/tukixumorelu.pdfIn PDF document text
- https://store-connector.com/_upload_bilder/_filemanager/file/pavolusoku.pdfIn PDF document text
- https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c73534b1966---lurofuwovaber.pdfIn PDF document text
- http://adamlegal.com/userfiles/file/fepusevepodibuzurixi.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=perma+shipping+trackingPDF 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_off0000c024.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC024	16548 bytes
SHA-256: `e0b3d94bc49016ebda862e6d929fbac276fa72afc73ea17be7337c435d2304a0`
`font_01_sfnt_off0000eaf1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEAF1	10748 bytes
SHA-256: `5deb45c408450886479624b94948833b70dea09b6a671d51e61dd101a5c71918`
`font_02_sfnt_off00010381.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10381	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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