PDF malware analysis — malicious · 486e7d400d93c826

MALICIOUS

PDF

85.9 KB Created: 2021-08-01 09:20:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24

MD5: 5b16e2f5a66f95a805ee8a0d7940db1a SHA-1: e4f816410ef606a056478d1877e39321f015f499 SHA-256: 486e7d400d93c826b5e4b1dc191f85dcb0adb4607b0556fea8569fb38d70caa2

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The file contains numerous embedded URLs pointing to compromised websites and disposable hosting, suggesting it is part of a link farm designed to redirect users to malicious content. The presence of external URI links and the overall structure indicate a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.8543

Heuristics 5

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
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://allytemp.ru/uplcv?utm_term=how+do+i+increase+my+whatsapp+status+views PDF link annotation
- https://nowtravelasia.com/userfiles/files/49037623311.pdfIn PDF document text
- http://acpiindia.com/userfiles/file/28712610620.pdfIn PDF document text
- https://banktapeunadana.com/tapeunadana/bank2/admin/userfiles/file/63634415759.pdfIn PDF document text
- http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160fc3efead5c5---lazinab.pdfIn PDF document text
- https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/d66693fe1004be67f8f6c5da4e72aa58/vufinovejedunige.pdfIn PDF document text
- http://files.ibiza-ferien.de/file/dosofitavipemumov.pdfIn PDF document text
- https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/160acfffdcaec8---jutagazobubudan.pdfIn PDF document text
- https://cortopolis.ar/userfiles/file/92139089571.pdfIn PDF document text
- http://taborcapitalpayment.com/clients/d/d0/d0a3925ee25d0adc8806453b18bccccc/File/34551972665.pdfIn PDF document text
- https://bio-obst-und-gemuese.de/userfiles/file/41238812087.pdfIn PDF document text
- https://prospr.fr/ckfinder/userfiles/files/japidemufubapubejavosiw.pdfIn PDF document text
- http://accessprecision.com/userfiles/file/88875947487.pdfIn PDF document text
- http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f59dd744135---81200539703.pdfIn PDF document text
- https://luminex.pl/upload/file/18509876343.pdfIn PDF document text
- http://naturallabs.de/userfiles/file/vatesutepuvoguf.pdfIn PDF document text
- http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7fd9952505---pumamanotisemavo.pdfIn PDF document text
- http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/160aa83508dfd3---kijawaxopov.pdfIn PDF document text
- http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d9e0b220df---zutuxit.pdfIn PDF document text
- http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/f363908bb2330e9a489e28bc50eac780/dumodogesazal.pdfIn PDF document text
- http://www.village-gaulois.org/gestion/ckfinder/userfiles/files/97350304952.pdfIn PDF document text
- http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d8cf645e6f---zowopelorasetojabarugam.pdfIn PDF document text
- http://aep-tc.com/cache/fck_files/file/zinafax.pdfIn PDF document text
- http://hollywoodterrace.org/clients/863344/File/36867668752.pdfIn 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_off0000f386.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF386	11092 bytes
SHA-256: `cea9709e1ea51e7fa28e483ba7f544057bd158350f5712e554c8804081ad5a99`
`font_01_sfnt_off00010d37.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10D37	16856 bytes
SHA-256: `6f779c08402349b8f80c7fe663ff8ce98fc448e28e72a84cd5d0b77846ff0706`
`font_02_sfnt_off000138f2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x138F2	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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