PDF malware analysis — malicious · f41463bc7de7b3b2

MALICIOUS

PDF

82.8 KB Created: 2021-07-17 10:25:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12

MD5: 1f152c624415332d91090db077ae4979 SHA-1: 485ff0da86742e8e75ef18f248ec2d4a897a5ab6 SHA-256: f41463bc7de7b3b22ee834d3d56d71c8599914d74c49b1e32babbe3b01c86f11

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. It contains a large number of embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature.

Machine Learning

Nyx PDF Classifier malicious score 0.9833

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://aquatherm-graz.at/files/44232582938.pdf In PDF document text
- http://etkindenetim.com/resimler/files/19463928958.pdfIn PDF document text
- https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f7ee6845b7---zosowagakusimipetix.pdfIn PDF document text
- https://awlights.com/wp-content/plugins/super-forms/uploads/php/files/e5377f7673c8aef2cba611b17673faff/totimowatijemapegide.pdfIn PDF document text
- https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/e2182512d67d9cdd61754f9e4f4f018d/25043962303.pdfIn PDF document text
- https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/pl0idbfq1mpm3s2bd4lsq86q35/wuzudarugabezezi.pdfIn PDF document text
- http://deepakbatteries.com/uploads/file/fazusivad.pdfIn PDF document text
- http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160e12a1bde5e0---xejifumikojelopov.pdfIn PDF document text
- https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/495a5114fbbd73be890aeb0c913f4162/83007434304.pdfIn PDF document text
- http://charivne.info/images/file/firujokugadurum.pdfIn PDF document text
- http://propellerclubsandiego.org/uploads/files/35744900703.pdfIn PDF document text
- https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/e82914d920c7e7c466a765bb02008bbe/98476506601.pdfIn PDF document text
- http://staceyasp.com/UserFiles/file/fumojazivenukedegivu.pdfIn PDF document text
- http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160c2f19039811---82138738176.pdfIn PDF document text
- http://rusiuojigalvoji.lt/wp-content/plugins/formcraft/file-upload/server/content/files/1609b1a2962271---66055568154.pdfIn PDF document text
- http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160718185d5cf9---gagazinilasif.pdfIn PDF document text
- https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/h5t4mumc9qtrr6ijs9behjtmko/loxitu.pdfIn PDF document text
- http://renovator.cz/files/file/danutu.pdfIn PDF document text
- https://nepalipublisher.com/ckfinder/userfiles/files/ranizadutopunatulejuto.pdfIn PDF document text
- http://beepost.vn/upload/userfiles/files/77377423765.pdfIn PDF document text
- http://1utilaje.ro/mm/file/93866335380.pdfIn PDF document text
- https://parc-hotel.info/file/5471853696.pdfIn PDF document text
- http://abwingssuffolk1.com/uploads/files/negosazejamap.pdfIn PDF document text
- https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/ad9749c3bb17fbf946e868ecd6e30762/26785220838.pdfIn PDF document text
- http://slenderclub.cz/ckfinder/userfiles/files/82344429435.pdfIn PDF document text
- http://yacpa.org/yacpafiles/file/94876303169.pdfIn PDF document text
- http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a010e4e2a19---newajagutiwemixodezutifa.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=the+magic+finger+questions+and+answersPDF 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_off0000dee3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDEE3	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000f6f5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF6F5	17632 bytes
SHA-256: `9331ff73369a1bf7fef108a3b0c5fe762198073f3a1242a2271966ade3466460`
`font_02_sfnt_off000123fd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x123FD	11172 bytes
SHA-256: `5d2ffecf19d22f3b37cd0f78fe5814488e7c244bfbbe2a64be97da91c046d6fb`

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