PDF malware analysis — malicious · f9246c9f9c375faa

MALICIOUS

PDF

80.1 KB Created: 2021-09-02 21:25:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: 15b9f66db1cd8b2c6f7c725d578913d1 SHA-1: a849c26882ca269d844ebf7c5d0744d70469733a SHA-256: f9246c9f9c375faaa1a6fa20320b36bbb9aa61dfab5d0d37762a808dc1e0a72f

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The file contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting it's part of a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9846

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://cructi.ru/uplcv?utm_term=hospital+inventory+management+system+pdf PDF link annotation
- https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16079b1dac834f---tazirebefit.pdfIn PDF document text
- http://www.marcelasemper.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb703721e14---56893238036.pdfIn PDF document text
- http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a450dcd7bcb---54898593140.pdfIn PDF document text
- http://pension-erlkoenig.de/img/editor/file/72399295879.pdfIn PDF document text
- https://jamiatulbanat.in/wp-content/plugins/formcraft/file-upload/server/content/files/161160727f20c6---2611519324.pdfIn PDF document text
- http://pogservice.ru/userfiles/file/mitamexegiwojosowaxaxinu.pdfIn PDF document text
- http://cualuoiskydoor.com/webroot/img/files/nuzidapo.pdfIn PDF document text
- https://open-call.fr/uploaded/files/69100876417.pdfIn PDF document text
- https://masterpieces-mallorca.com/wp-content/plugins/super-forms/uploads/php/files/7a9f307c79674c204effee6e074ba3d8/jidumojijik.pdfIn PDF document text
- http://enidbtwcreunion.com/clients/5/52/52e94d62e82ff66504c7d921fc07bf70/File/5815358444.pdfIn PDF document text
- https://www.mysmilestudios.com/wp-content/plugins/super-forms/uploads/php/files/dd3d75ba02419f0ac3c3b9a2c5272ed7/33629468923.pdfIn PDF document text
- https://vandolderskb.com/images/usr/89916285751.pdfIn PDF document text
- http://www.tecnotrefg.it/wp-content/plugins/formcraft/file-upload/server/content/files/160bd00171d76f---149418437.pdfIn PDF document text
- http://smenergy.kr/uploaded/file/2591435611dc2f3ee752.pdfIn PDF document text
- https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/9d929d459aa4d9047bd48eca353b73f6/lamik.pdfIn PDF document text
- http://dambi.pl/userfiles/file/22216437603.pdfIn PDF document text
- https://www.hotelamoha.it/wp-content/plugins/formcraft/file-upload/server/content/files/160eca41aabcda---vobibewipusilurum.pdfIn PDF document text
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cecfe9383a---68406350642.pdfIn PDF document text
- https://binarbaidequipment.com/public_html/userfiles/file/megujabotiwudiri.pdfIn PDF document text
- http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5505294ace---xikapusowis.pdfIn PDF document text
- https://www.auto-ecole-acm.com/ckfinder/userfiles/files/fokiw.pdfIn PDF document text
- http://cpils.com/userfiles/file/tixadogi.pdfIn PDF document text
- http://somersetcountybar.org/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/tubijos.pdfIn PDF document text
- http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/g7r0c6rs1n11840hf466of3843/10992900250.pdfIn PDF document text
- https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7c47190ea3---27129867433.pdfIn PDF document text
- https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/160876ed5ab38e---tatizugozodemamudeda.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_off0000d7f1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD7F1	16200 bytes
SHA-256: `25d586d1801d15f80d2e960f4e962aeeb3794206ee0c78f6964111b0551ff76b`
`font_01_sfnt_off00010145.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10145	11012 bytes
SHA-256: `36c457fd6b3b41dd2f907a9f5d9236fc8bc9263d9f7da732f6d8d46b7f4ffe4a`
`font_02_sfnt_off00011aab.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11AAB	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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