PDF malware analysis — malicious · 3e7818615229ed40

MALICIOUS

PDF

83.9 KB Created: 2021-07-01 14:44:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25

MD5: 18ec42c7ebd3f8cde90be3d2ccd9f4dc SHA-1: 4d2c905cf93c24d040c3a7ee3c5ec821c1258233 SHA-256: 3e7818615229ed40ba2af8312e0e2a894d625ef87d85f9c6b5f4fc640965e0d5

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to compromised WordPress sites, indicating it functions as a link farm. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the structure itself is designed to lure users to malicious destinations.

Machine Learning

Nyx PDF Classifier malicious score 0.9951

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://medvor.ru/uplcv?utm_term=as+long+that+you+love+me PDF link annotation
- http://fashioncenterpoint.com/wp-content/plugins/super-forms/uploads/php/files/64f9e335da66593d4c6b10a8f4a359ba/2859847073.pdfIn PDF document text
- https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/2e77f4bc04d368ccd33a2e485f715683/mizuworaketirifodaga.pdfIn PDF document text
- https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/c5919ef11fee3674fd499ab2260607bf/84952185163.pdfIn PDF document text
- https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc51762067---sobubatosup.pdfIn PDF document text
- http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8a8cf3f793---wuzununolozadokevetutebis.pdfIn PDF document text
- http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607a980cc31e5---xuxir.pdfIn PDF document text
- https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/d6bb9ac996168815285ae0730b660c0c/benoxojojajaxuvuvo.pdfIn PDF document text
- http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/1608ed83a44f97---60940795034.pdfIn PDF document text
- http://xn--aknmedcal-wpbe.com/uploads/file/bavezarupinemesut.pdfIn PDF document text
- https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8ffa8a762---sinefavaxi.pdfIn PDF document text
- https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/a0cca174e075543d8f052c5300e75de7/zojagosoralufepopatumasi.pdfIn PDF document text
- https://xn--22ck6bdp5cach0mc23a.com/ckfinder/userfiles/files/88251397494.pdfIn PDF document text
- http://se-ty.ru/uploads/userfiles/file/nemavujemarituvuzitale.pdfIn PDF document text
- https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/160862c25e3a51---83604156097.pdfIn PDF document text
- http://amazingindiaphotos.com/amazingindiaphotos//upload/fckimage/file/77804469056.pdfIn PDF document text
- https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/kv06scaothulocracsequuifm3/lebakod.pdfIn PDF document text
- https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/160948df8380f3---24544038302.pdfIn PDF document text
- https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/ier4almpkcnlq50siqd77i00t3/nejubegoxabebazowetaj.pdfIn PDF document text
- http://kennedy-jackson.com/clients/f/f7/f78508644b517540cdb1549d93860f53/File/11186749353.pdfIn PDF document text
- https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607991c5d9519---wujiguwupinimir.pdfIn PDF document text
- http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a2d23e50ff7---lazoratimunisi.pdfIn PDF document text
- https://movesforfree.com/wp-content/plugins/super-forms/uploads/php/files/07dlk6s7i90mcq9vo4op0a9273/nutabeputuvojanuvutamek.pdfIn PDF document text
- http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160c7a44d84cd0---dadij.pdfIn PDF document text
- http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca92d70e83---32947963208.pdfIn PDF document text
- http://4bx.pl/public/file/3177333839.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_off0000e569.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE569	10624 bytes
SHA-256: `7a98e7e2ede1c0b87d31cd80560d0bebc218adea78e497d134a677cec5f4c5e4`
`font_01_sfnt_off0000fda8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFDA8	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off000115ba.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x115BA	17180 bytes
SHA-256: `6826983d75dbd3d8a083a63f440e54c159570c9a1fc0c35b57b9e2c0b9e8f1ff`

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