PDF malware analysis — malicious · 47ba325810d8d30c

MALICIOUS

PDF

78.0 KB Created: 2021-09-01 01:23:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14

MD5: 73b0402e93dc1491b2060c34b11ccaeb SHA-1: 8e92f0780b942384b59e25620c4a333fe4d30c70 SHA-256: 47ba325810d8d30c477846007181487fe2180c55bd010f6e257a607ab38521c5

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file contains a link farm, directing users to multiple external websites hosted on potentially compromised CMS platforms. The ClamAV detection and the nature of the URLs suggest a phishing or malware distribution attempt. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific lure.

Machine Learning

Nyx PDF Classifier suspicious score 0.3290

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://hifitness.hu/userfiles/file/57305838478.pdf In PDF document text
- https://stayinbranson.com/ckfinder/triplebuserfiles/file/jameximagefa.pdfIn PDF document text
- https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/60a6499ea741897de496ab12d6998228/90091754669.pdfIn PDF document text
- http://pogologistics.com/ckfinder/userfiles/files/51616060505.pdfIn PDF document text
- https://watfordfairtrade.org/app/webroot/img/files/zedasineweforapap.pdfIn PDF document text
- https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/755aed2f6b78d181fb581a604c8b020d/26810435605.pdfIn PDF document text
- http://www.slenderclub.cz/ckfinder/userfiles/files/gejaligagirubofexenaw.pdfIn PDF document text
- http://allprintusa.com/admin/images/file/76989466443.pdfIn PDF document text
- http://caratow.eu/userfiles/file/54914100702.pdfIn PDF document text
- http://burchiellati.com/file_fck/file/20308423140.pdfIn PDF document text
- http://sciencevier.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610daf23d7c88---jawatagujikukorufuvuwoka.pdfIn PDF document text
- http://www.allatpatikapecs.hu/images/file/76492473316.pdfIn PDF document text
- https://bedandbreakfastchia.it/userfiles/file/vejegodezifol.pdfIn PDF document text
- http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/160987cf8815ae---28317347446.pdfIn PDF document text
- https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac405aef4aa---makupelurof.pdfIn PDF document text
- http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611623a92f62c---13084491496.pdfIn PDF document text
- http://kxnjl.com/userfiles/files/kekumimopemokem.pdfIn PDF document text
- http://moestuinwebshop.nl/userfiles/file/jujebodo.pdfIn PDF document text
- http://abwhopewell.com/uploads/files/40589972691.pdfIn PDF document text
- http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d4cb77a20e5---bovexugamukuze.pdfIn PDF document text
- http://eggtesting.com/admin/uploads/file/jifiwedarolisudi.pdfIn PDF document text
- https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/160e642d7987e7---19644477752.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=types+of+coffee+word+search+proPDF 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_off0000d7a8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD7A8	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000efba.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEFBA	18512 bytes
SHA-256: `94869d24baca2dfe87d4b0457e1bd74b78d571c2b3ba4c6ce8a8806a0e4408c9`
`font_02_sfnt_off00011f77.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11F77	10540 bytes
SHA-256: `59dc26f9784f94ff8ddd0b0d23dad7b89ee7b87bbb3e43207166e9dd9be8fd59`

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