PDF malware analysis — malicious · 95b3cbf7eaaffdf2

MALICIOUS

PDF

80.3 KB Created: 2021-09-05 16:02:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: 795ddeef9a441214242b5e04e085d04a SHA-1: a8059214438083249e89e8243d197c74649d6f0f SHA-256: 95b3cbf7eaaffdf223ae5677c1056330cfae3a524e9bb3a986541fa80d04fbb9

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics as malicious, including a specific ML classifier and ClamAV detection. It contains numerous links, many pointing to compromised WordPress upload directories or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The document body is unreadable, but the presence of external URIs and link farm indicators strongly implies a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9833

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://synerhu.ru/uplcv?utm_term=fragged+seas+pdf PDF link annotation
- http://altaprecision.com/userfiles/file/nezawekenaxeta.pdfIn PDF document text
- http://terralis.eu/catalogue_dynamique/file/ninepudepumilezibez.pdfIn PDF document text
- https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/160cadc5082c43---73263459913.pdfIn PDF document text
- http://yachtandgulet.com/userfiles/file/wilogugozunilawodanemezo.pdfIn PDF document text
- http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/160dcc540b761b---66195000549.pdfIn PDF document text
- https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bbc6b5a171c---manutese.pdfIn PDF document text
- http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160db12d519b4c---zoralapun.pdfIn PDF document text
- https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/161315b6572557---786479277.pdfIn PDF document text
- http://brilspa.ro/userfiles/file///jubatewewatuten.pdfIn PDF document text
- http://ahcxdq.com/uploads/file/280506048742.pdfIn PDF document text
- https://nocnepal.org.np/ckfinder/userfiles/files/98214390974.pdfIn PDF document text
- http://rotarytattoomachine.co/project-new/christianbook/upload_images/file/didafep.pdfIn PDF document text
- https://cashmeredreams.com/wp-content/plugins/super-forms/uploads/php/files/accdf0e66d5eeb3cdc7aafddadcdcc8e/61820359104.pdfIn PDF document text
- http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/a0cab63694c0ca78d2b17bcfc48f8f35/wipiludoxopoponogomimonu.pdfIn PDF document text
- https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160795ce690150---kuvidikez.pdfIn PDF document text
- https://www.hontoys.com.au/wp-content/plugins/super-forms/uploads/php/files/m7niiglm37ongcnu71kghpof47/48296423038.pdfIn PDF document text
- https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/83944d69f19fb3f3f8c02844c1decf0f/55942508681.pdfIn PDF document text
- https://www.masismarketing.com/wp-content/plugins/super-forms/uploads/php/files/00d6aea8f5134e57148a16241f71cf36/ranefijenokirimenasesa.pdfIn PDF document text
- https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/1c02f158e5fe804232da6c3599e3d028/genililepifasegu.pdfIn PDF document text
- https://dogathermalhotel.com/resimler/files/fovakofalagemoxulupowaro.pdfIn PDF document text
- https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/hjullt82qi48mh0eglov076gcl/56289909042.pdfIn PDF document text
- http://all-premium.com/user_file/files/14966410510.pdfIn PDF document text
- https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609bac1e29870---xumibo.pdfIn PDF document text
- http://landroverbh.com/ckfinder/userfiles/files/kivuget.pdfIn PDF document text
- https://baileyelectrical.services/wp-content/plugins/super-forms/uploads/php/files/ngdloj2jj9ddc8diuduhtlhvsk/6909512654.pdfIn PDF document text
- http://longarmacademy.net/fckeditor/userfiles/file/fobimilit.pdfIn PDF document text
- http://phdpecs.hu/userfiles/files/16961539624.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_off0000d65c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD65C	17952 bytes
SHA-256: `ffb608f4711d9a0e14b07ee8e289976a57f72c8465a3b98c6e08d4e69778a761`
`font_01_sfnt_off000104df.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x104DF	10188 bytes
SHA-256: `710a0c3a8e27bd1fc084f33585f5fbd67e5831692ac00dedb524156d6a5baf8c`
`font_02_sfnt_off00011b8e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11B8E	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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