PDF malware analysis — malicious · 4c2e3a00b1e6a192

MALICIOUS

PDF

81.0 KB Created: 2021-09-16 20:47:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23

MD5: 6368521f600e17b7633a1a3cfd8f3b3f SHA-1: 9a4a1f7b315bbfa3357595f45958a978621962c7 SHA-256: 4c2e3a00b1e6a192722554f419de0024208e0e9707c5cf7e0af329485bc1cdad

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file is identified as a malicious PDF by multiple heuristics and a machine learning classifier. It contains numerous embedded URLs pointing to compromised WordPress sites and other disposable hosting, suggesting a link farm designed to redirect users. The presence of these links indicates an attempt to direct users to malicious content, likely for phishing or further malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9974

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://oniceh.ru/uplcv?utm_term=android+tv+connected+but+no+internet PDF link annotation
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fcaa50c261---sumerorizitur.pdfIn PDF document text
- http://tantusmarina.com/UserFiles/file/gakuf.pdfIn PDF document text
- https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a6f6a34076---44706673757.pdfIn PDF document text
- https://ms02bet.net/contents/files/kewotexije.pdfIn PDF document text
- http://rungrawin-itt.com/userfiles/files/vagatizevisofikaxavixasa.pdfIn PDF document text
- http://bjdfszwy.com/filespath/files/20210906143804.pdfIn PDF document text
- http://ondamarinarest.com/upload/files/45119720009.pdfIn PDF document text
- https://questyme.com/userfiles/file/komukorot.pdfIn PDF document text
- http://cheapmarkt.com/userfiles/file/kozudom.pdfIn PDF document text
- https://artcorner-fiberglass.com/userfiles/files/80392675534.pdfIn PDF document text
- http://retailcop.ca/files/33013373162.pdfIn PDF document text
- https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/c5b80df6f0954eb5fab6baacd956e928/bosuvasuragubizalena.pdfIn PDF document text
- https://praktijk-fix.nl/userfiles/image/file/58524046465.pdfIn PDF document text
- http://psychanalyste-gard.fr/ckfinder/userfiles/files/tezutasafedake.pdfIn PDF document text
- https://trisyscom.com/userfiles/file/62097575363.pdfIn PDF document text
- https://thisissati.com/userfiles/files/moretobagudemarezavexebop.pdfIn PDF document text
- http://jedzenie365.pl/ckfinder/userfiles/files/8387459115.pdfIn PDF document text
- https://gaadalagi.com/contents/files/xizopetibufesitanefudisan.pdfIn PDF document text
- https://atx-stroy.ru/wp-content/plugins/super-forms/uploads/php/files/d4b4b464c275fc4674db66a6a72468ed/givimapitalowuluzejoselaj.pdfIn PDF document text
- http://studiosaletta.it/userfiles/files/5564395620.pdfIn PDF document text
- http://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16141923203cf3---nujogopiruzazojevo.pdfIn PDF document text
- http://lamorenj.com/userfiles/file/70933571275.pdfIn PDF document text
- http://asremajazi.com/uploads/files/13656595366.pdfIn PDF document text
- http://freehajjandumrah.com/admin/admin/uploadfiles/file/80686889301.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_off0000d759.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD759	10276 bytes
SHA-256: `5022bf658009f6b8138f9914d2ab110f6300b53dc771118f0d51cc45a30d7a4d`
`font_01_sfnt_off0000ee95.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEE95	18152 bytes
SHA-256: `994eb51dbe1269410c01998bdc75e64bc99242e11fcb9b5e8016505a1b285a25`
`font_02_sfnt_off00011def.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11DEF	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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