PDF malware analysis — malicious · 689e6f3c2293f19f

MALICIOUS

PDF

84.6 KB Created: 2021-07-25 09:48:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12

MD5: 1a5864f410abbea707785e6fe2c9fa11 SHA-1: 0ed04db7065ebe7f5824fad802fa696956e86a0b SHA-256: 689e6f3c2293f19fc098ea70afce5d9a29beaa6f4073bb7bd44af8f9b8a0401d

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious. It contains numerous embedded URLs, many of which point to compromised CMS upload storage or are part of a link farm on disposable hosting. The presence of these links suggests an attempt to lure users to external sites, likely for phishing or to download further malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.8669

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
PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED

The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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 http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/a4ae00529412df086098ced74438e939/43250678358.pdf In PDF document text
- https://www.beadvised.co.uk/wp-content/plugins/super-forms/uploads/php/files/1fc4f1fe52ab6cf84086725cbfbda4fb/vojadisuku.pdfIn PDF document text
- https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bdf45ce10ef---vanimitinemadovogideki.pdfIn PDF document text
- http://euro-ex.com/images/blog//file/botagomumosuvakinutijoj.pdfIn PDF document text
- https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/82634f822ce967e4f93624281519fd69/gidemaropes.pdfIn PDF document text
- https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cd113be559---povinozunivapamanoxagomew.pdfIn PDF document text
- http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086788952d2e---wivevubakidob.pdfIn PDF document text
- https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/16083f39022624---50833205047.pdfIn PDF document text
- http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7de620e13---mawum.pdfIn PDF document text
- http://seoulsquare.com/userfiles/file/lopagivajitebimokawuseves.pdfIn PDF document text
- http://erbilsunhotel.com/wp-content/plugins/super-forms/uploads/php/files/r56psvibvqn4luvje04e8ldur6/sepimewezumob.pdfIn PDF document text
- https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/3dbffd20d5c37377d46ebf08c665c521/56403246069.pdfIn PDF document text
- https://dadrarad.ro/userfiles/file/dubokowagokuxuxoboxo.pdfIn PDF document text
- https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/72d411c6fb6ef8b1b10d9f26b5749fc3/zenujatibifarotuni.pdfIn PDF document text
- https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/0u5bh4bgei9t8s48notm3cvqim/rugerufavojigi.pdfIn PDF document text
- http://fotofolliasanlazzaro.it/userfiles/files/bivefiwusowe.pdfIn PDF document text
- https://www.sadcmedia.com/wp-content/plugins/super-forms/uploads/php/files/j1e8juo8lpdqpkdmrv8p52i1si/zuzegoturolo.pdfIn PDF document text
- https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/450332b9ac06b250a29444c72c82dd41/81189746150.pdfIn PDF document text
- http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16071c8d135f66---60755135113.pdfIn PDF document text
- http://abimobiliare.pl/pliki/File/31872063685.pdfIn PDF document text
- https://sharzh-ufa.ru/wp-content/plugins/super-forms/uploads/php/files/1b2cb6d9c1c91c1bb3b3b7937ec4086f/13589401362.pdfIn PDF document text
- http://nousgarage.com/userfiles/file/rufabugu.pdfIn PDF document text
- http://stratford1980.com/clients/1/19/19838be1bbe5684469623718d5e25b5d/File/95759510836.pdfIn PDF document text
- https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cd6db1ee313---venovopukovivo.pdfIn PDF document text
- http://stroi-sistema.ru/img/rasuwexevadaxusoza.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=instagram+likes+free+app+iosPDF link annotation
- 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_off0000f394.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF394	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off00010bab.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10BAB	10744 bytes
SHA-256: `a28a29e64ce9c9e907fc85b3d3e4f5de6415ccee652a3ac0c37352743653aac4`
`font_02_sfnt_off00012450.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12450	17604 bytes
SHA-256: `a2f6b5f6529f73ce6b928ce77c76b28880ddadd7cca3c91e5d04cb5a6395eac5`

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