PDF malware analysis — malicious · 08e7a8fe0a019a46

MALICIOUS

PDF

90.6 KB Created: 2021-07-13 03:41:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14

MD5: cf7e35d8c7434510a505c9802b0b140e SHA-1: 82555fbde9c725e3aa1e1165178f74cb3169a743 SHA-256: 08e7a8fe0a019a4612d29297da7865c7a382a989d337d722dbb0f944b18ba00c

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to host malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9835

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=sigmund+freud+5+lectures+on+psychoanalysis PDF link annotation
- http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606f21440c50b---bosubariwajabikalop.pdfIn PDF document text
- http://photographybynami.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608171dcdc97f---xifozen.pdfIn PDF document text
- http://www.canadavisaservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607337c4e35ce---29552517358.pdfIn PDF document text
- https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/23bd02efb61eb87d8faa46c9df0c28a9/7866819272.pdfIn PDF document text
- https://kildevangen.dk/files/desufoxekemutiresase.pdfIn PDF document text
- http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608dd9dbada40---gowafopuvuvej.pdfIn PDF document text
- http://tubietelbar.hu/uploadfile/mikiwa.pdfIn PDF document text
- https://masihpt1.com/contents//files/fiduza.pdfIn PDF document text
- https://vate-tire.ru/wp-content/plugins/super-forms/uploads/php/files/bb975999388d280e5f8f3a55025fff83/4112084846.pdfIn PDF document text
- https://technok.cz/wp-content/plugins/super-forms/uploads/php/files/e208f8129335f640be5a4276b18a7c71/tafasijajariwopaxizekew.pdfIn PDF document text
- https://www.mysmilestudios.com/wp-content/plugins/super-forms/uploads/php/files/a0b23889f488a8123a9a04f7e2ddb5e8/setenidutewis.pdfIn PDF document text
- https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/emns7j4337a9v1jfqc78ug537m/92976710247.pdfIn PDF document text
- http://associacaoguainumbi.org.br/wp/wp-content/plugins/formcraft/file-upload/server/content/files/16097faf99301b---vofeje.pdfIn PDF document text
- http://barudan.hk/UploadFile/file/20210605224728191.pdfIn PDF document text
- http://app8itebarandgrill.com/admin/images/file/wuroxebupifa.pdfIn PDF document text
- https://www.partyshuttlebus.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16084ddeeaff24---13514629835.pdfIn PDF document text
- https://laihouston.com/wp-content/plugins/super-forms/uploads/php/files/5c230c4199937c2eff460af23d4381f5/sexifoneduzivovutolesupaz.pdfIn PDF document text
- http://lso-msm.fr/userfiles/file/70056477824.pdfIn PDF document text
- http://myxroad.com/upload/userfiles/file///26110283491.pdfIn PDF document text
- https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160adcd5f97b44---99646681749.pdfIn PDF document text
- http://elencostruzioni.it/userfiles/files/93802588886.pdfIn PDF document text
- http://gptools.net/userfiles/file/60218068741.pdfIn PDF document text
- https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/2a1a4efffff0a563e5cd37c43dcb5615/zubowewimi.pdfIn PDF document text
- https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4aa9f08fbb---76797405020.pdfIn PDF document text
- http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607f65a8ec852---27984822602.pdfIn PDF document text
- https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/ccce711c63c7cc0b00be292ae84077d1/kinikabejavot.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_off0000fb8a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFB8A	11492 bytes
SHA-256: `98607da2a061261d6911b6888acf3ee7c6ea6a23b7e751c1130614630d242f32`
`font_01_sfnt_off00011663.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11663	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00012e75.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12E75	17168 bytes
SHA-256: `364b0055853faec565dcb1eae7ae0cdc43a4bfa1ccbc85f44112280e99ba7fa3`

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