PDF malware analysis — malicious · 1419d92fed65e08b

MALICIOUS

PDF

90.4 KB Created: 2021-08-12 07:15:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: 51537f2b8b7bc8cd7fe2e1d1c8c23d77 SHA-1: 56b79400109bbea5809cd53f0c74873415b41e08 SHA-256: 1419d92fed65e08bb0f8aac657d15a464104b6dfbfba504eac15c665c18f3a98

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to compromised CMS uploads or are part of a link farm hosted on disposable domains. The primary function appears to be redirecting users to external, potentially malicious sites, aligning with phishing or malware distribution tactics.

Machine Learning

Nyx PDF Classifier malicious score 0.9905

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://mm-podium.ro/userfiles/file/gepulibowefiwuje.pdf In PDF document text
- https://sce.tw/uploads/files/60c389284860e.pdfIn PDF document text
- https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c3e42fb8f69---89706869114.pdfIn PDF document text
- http://digifast.cz/userfiles/polimofetigugugojon.pdfIn PDF document text
- http://malopolskiszlakwinny.pl/upload/File/gerikubapuxopiwal.pdfIn PDF document text
- https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/1606d4c3dd3fd3---pawibitezulozowobusevetaf.pdfIn PDF document text
- https://atputasbaze.lv/images/userfiles/files/dodome.pdfIn PDF document text
- https://www.cfo-search.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609aea3a7f447---72883037290.pdfIn PDF document text
- https://escaletravel.com/userfiles/files/51488127332.pdfIn PDF document text
- https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/ac6abb17ec98352d14f97545e9fdec35/wetadubek.pdfIn PDF document text
- https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/00b9da925230802719b9acec59f9c79a/74949191981.pdfIn PDF document text
- http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088a1f51bfab---xomunosemurizumebejek.pdfIn PDF document text
- http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b091061ed06---73729103744.pdfIn PDF document text
- http://suprizpin.com/calisma2/files/uploads/dokilarupoguwepanop.pdfIn PDF document text
- https://anpheatingandac.com/nbloom/fckuploads/file/582628657.pdfIn PDF document text
- http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609a965b62741---bekuxubomi.pdfIn PDF document text
- http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a4c392329cc---76387728334.pdfIn PDF document text
- http://macphersonproperties.com/clients/876251/File/womiwegoz.pdfIn PDF document text
- http://kartelabasligi.com/images_upload/files/84614714302.pdfIn PDF document text
- https://www.cfo-search.com/wp-content/plugins/formcraft/file-upload/server/content/files/160889f1f47952---73907203883.pdfIn PDF document text
- http://akcjonariusz.com/UserFiles/file/rosifusobefodenav.pdfIn PDF document text
- https://laihouston.com/wp-content/plugins/super-forms/uploads/php/files/c6095ea075e2d69d65623e7191c684df/92665357977.pdfIn PDF document text
- https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/ci9ls89c77s5damnjm43goig06/fapavuvaxegesi.pdfIn PDF document text
- http://stonebreaker.at/gizujowelunarikelowima.pdfIn PDF document text
- https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/16110070e11ec6---50679346477.pdfIn PDF document text
- http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160b82b245bf5c---52804575762.pdfIn PDF document text
- https://tuvanthietke13-5.com/webroot/img/files/niworivepebedapopi.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=logical+reasoning+direction+tricksPDF 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_off0000fd49.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFD49	10596 bytes
SHA-256: `aa29aa7ccf6907f7382622a150409779e4a424ddae487bcf6d74c5b2b2351389`
`font_01_sfnt_off00011569.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11569	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00012d7b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12D7B	18168 bytes
SHA-256: `9bfcdb7eb600ce10adec206d78549dbd73c0abde22ed98b2b99d275aa4462cd4`

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