PDF malware analysis — malicious · 10d074e3cc0ab963

MALICIOUS

PDF

80.3 KB Created: 2021-09-16 20:46:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: a5a3799c0fb9bb557666804db916c1c4 SHA-1: 48d2ae7276f9f6495bb96da4778767fa44e6aaca SHA-256: 10d074e3cc0ab963bedc47866a008dbc21055873c5a6106d3ab22482a150061a

164 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to disposable hosting or compromised CMS upload directories, forming a link farm. The presence of embedded JavaScript and ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicates a phishing or malware distribution attempt. The document body is heavily obfuscated, but the heuristics and URLs clearly point to a malicious intent to redirect users.

Machine Learning

Nyx PDF Classifier malicious score 0.9975

Heuristics 7

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.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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://crewmak.ru/uplcv?utm_term=harry+potter+prisoner+of+azkaban+full+film PDF link annotation
- http://mcserpenti.com/userfiles/file/32675781213.pdfIn PDF document text
- http://the100voicesofgospel.ch/fichiers/newsletter/file/gabivu.pdfIn PDF document text
- http://wittymall.com/multimedia/userfiles/file/99908767671.pdfIn PDF document text
- https://www.info-service.com.tw/plugin/ckeditor/ckfinder/userfiles/files/59823647943.pdfIn PDF document text
- https://deesudcoolingtower.com/userfiles/file/zolekatitasazubalarorewe.pdfIn PDF document text
- http://manvilastrust-org.bvirani.com/ckfinder/userfiles/files/14491332248.pdfIn PDF document text
- http://cka-shiba.com/ckfinder/userfiles/files/43989684998.pdfIn PDF document text
- https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/61b7930c521a1e4726151a4a92db326a/rowijovu.pdfIn PDF document text
- https://drlanda.hu/user/file/3985824437.pdfIn PDF document text
- http://phuvuongcorp.com/luutru/files/55850514915.pdfIn PDF document text
- http://www.palmettoexpresslanes.com/system/js/back/ckfinder/userfiles/files/73053316228.pdfIn PDF document text
- https://riosemarescentrodemergulho.com/ckfinder/files/sojuwo.pdfIn PDF document text
- https://sellos-mecanicos.com/wp-content/plugins/super-forms/uploads/php/files/5dc12425263e9dc3cf51a2e44f6b6a98/35508808583.pdfIn PDF document text
- http://bortran.com/upload/image/file/20210912033534.pdfIn PDF document text
- http://platcometals.com/images/file/98788215503.pdfIn PDF document text
- http://ippon.lv/uploads/File/gawakupozesezedun.pdfIn PDF document text
- http://dongshengcable.com/images/upload/File/5686856221.pdfIn PDF document text
- https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/161437b5ee9c77---neretoxojokulevesuwus.pdfIn PDF document text
- http://sgo-bage.com/public/files/files/diroxuvefijanakiwegagede.pdfIn PDF document text
- http://dallard.fr/ressource/site-image/files/xuropupamunoburajabona.pdfIn PDF document text
- http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138f2fd76969---fusogifijomufoj.pdfIn PDF document text
- https://nitm.ac.in/nitmeghalaya/ckfinder/userfiles/files/minozofebejixozigux.pdfIn PDF document text
- http://dostrojar.sk/UserFiles/file/jaxofuzizefazurikosajig.pdfIn PDF document text
- https://wildnaturetravel.com/File/5792298540.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_off0000d28a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD28A	17836 bytes
SHA-256: `9e767d6bf80e754c49f857539925380b3668e5c620c443ee3fe00e1824968def`
`font_01_sfnt_off00010152.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10152	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00011969.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11969	11016 bytes
SHA-256: `50ff380d82f426e354eeab5ccdf119bdf09e43b74512deefb39d491ee8c4408e`

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