PDF malware analysis — malicious · 0f0d4b06b490421b

MALICIOUS

PDF

84.0 KB Created: 2021-07-01 10:34:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14

MD5: 203edb0fcb7d8ef48d6924683b9b8179 SHA-1: 2b42cbc29eb0f9e917da006a9532b17a3be46ebc SHA-256: 0f0d4b06b490421bbeb02e61b4e92ec6c0f5cbdf01be4f3be584970074c8b1fc

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links pointing to compromised WordPress upload directories, suggesting a link farm designed to distribute malicious content or redirect users. No scripts were extracted, but the structure and URL patterns indicate a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9860

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 http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae4f3bdf62b---36027874430.pdf In PDF document text
- http://apogeeconsultancy.com/upload/files/43062273082.pdfIn PDF document text
- https://www.webplease.it/wp-content/plugins/super-forms/uploads/php/files/tu6rcj002a18jpmguus9sjq8oo/sunoxenajukedubepag.pdfIn PDF document text
- https://lakeshoresmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/h48aak6dg3t8v9paggeiiktk43/53438812660.pdfIn PDF document text
- http://visit-pune.com/userfiles/file/bivaj.pdfIn PDF document text
- https://cosalesrep.com/wp-content/plugins/super-forms/uploads/php/files/a170574168392bcc88be86b01c2f00cc/71689131732.pdfIn PDF document text
- http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/47abc5a1b1db134a577187c3e05c2152/83101118275.pdfIn PDF document text
- https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a4619418215---54457897200.pdfIn PDF document text
- http://www.altrus.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16084cb365c21a---86959129972.pdfIn PDF document text
- https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/6ed5de438c677a958dfe461f113bb708/mipifutuzotezewage.pdfIn PDF document text
- https://www.nrlandscapes.co.uk/wp-content/plugins/super-forms/uploads/php/files/33e49be32579505d772a8b088002fdec/voligeganefoziriv.pdfIn PDF document text
- https://conexus-study-abroad-travel.com/ckfinder/userfiles/file/7448980086.pdfIn PDF document text
- http://psychoterapia-przemysl.net/img/userfiles/file/15062122620.pdfIn PDF document text
- http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607ca1cd08682---bozafuwaguleko.pdfIn PDF document text
- https://higher-reason.com/wp-content/plugins/super-forms/uploads/php/files/qq6orac5o2a3v56qir8mal9r13/sepuwosifodev.pdfIn PDF document text
- https://ferado.vn/userfiles/file/tikuvozirunem.pdfIn PDF document text
- http://chatfieldfarms101.com/userimages/vorawoxuvimixa.pdfIn PDF document text
- http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16078a2210def0---72978520776.pdfIn PDF document text
- https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/ro2o9m5e8uqfhhvqgco71n3afg/risisakus.pdfIn PDF document text
- https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608fca4aaf6b6---rixirowavefemala.pdfIn PDF document text
- http://dorp.pl/userfiles/files/riwiwulowifo.pdfIn PDF document text
- https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/easdcl8dct0ior4vfsou7kcftc/rerexoverewejatetobik.pdfIn PDF document text
- https://techson-cctv.com/upload/file/55051178768.pdfIn PDF document text
- http://ride.hu/images/uploads/files/koded.pdfIn PDF document text
- http://tz5168.com/uploadfile/image/2021/05/19/file/20210519_131817_160.pdfIn PDF document text
- http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160ae1e2610154---8686880703.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=non+metals+with+high+melting+pointPDF link annotation
- 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_off0000e5e8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE5E8	10664 bytes
SHA-256: `c0837a96c64c84119867a2531a415d346e360b426ba7a2981945471b5d40aaae`
`font_01_sfnt_off0000fe32.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFE32	17024 bytes
SHA-256: `40689dd4b118335d8c8ada18277b4558caecd701a8284859de71c555203c90ce`
`font_02_sfnt_off00012a4e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12A4E	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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