PDF malware analysis — malicious · 9ea313d2d39bcf88

MALICIOUS

PDF

91.0 KB Created: 2021-09-20 03:28:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22

MD5: 3d70e3dcf24e28355f706e13a5f03ba5 SHA-1: 66d2a11c31c631c2bda9e2de95313d8379b16dad SHA-256: 9ea313d2d39bcf8833e938b8c9dfc6b5c9f25010f0d6c04e9d1cd889bbbebaa8

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The document contains numerous external URIs and link farm patterns, suggesting an intent to redirect users to potentially malicious websites. While no scripts were explicitly extracted, the PDF structure and link farm heuristics indicate a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9913

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 https://farmaciasacoor.com/site/upload/file/xowugufevomovuvivuk.pdf In PDF document text
- https://www.agencesramos.com/ckfinder/userfiles/files/31534504293.pdfIn PDF document text
- https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/161450d9c2d8c6---bazonixozepopisot.pdfIn PDF document text
- https://rentcar888.com/uploads/files/202109150846503823.pdfIn PDF document text
- https://apexsafetyproducts.com/ckfinder/userfiles/files/nopobujulexuzig.pdfIn PDF document text
- https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/c96c602da4c751200c0e5bbb039c4add/79023618671.pdfIn PDF document text
- https://bhsbeacon.com/FCKeditor/file/mebowowidevop.pdfIn PDF document text
- https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613bc5753c1c8---nalemevetelalipeb.pdfIn PDF document text
- http://enovosti.info/ckfinder/userfiles/files/pudukeb.pdfIn PDF document text
- http://moyamoya.center/images/hand_uploaded/files/9119069001.pdfIn PDF document text
- https://protradingindia.net/userfiles/file/madimuwusijakoforakapo.pdfIn PDF document text
- http://hagelkonzept.de/userfiles/file/pubitididaraxifipuzububuf.pdfIn PDF document text
- https://la-klamm.org/userfiles/file/47165776013.pdfIn PDF document text
- http://naitikfashions.com/ckfinder/userfiles/files/88423244793.pdfIn PDF document text
- http://sushigonewildtogo.com/uploads/files/fawege.pdfIn PDF document text
- http://chongqinghaohong.com/upload/files/62109690635.pdfIn PDF document text
- https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/ph9k8tf62c3808bbbscfvcc4a1/97586345408.pdfIn PDF document text
- https://vnycc.com/userfiles/file/8268680485.pdfIn PDF document text
- http://atsrealtyvietnam.com/upload/files/87444978367.pdfIn PDF document text
- https://marblobaths.ph/app/webroot/img/files/dobawu.pdfIn PDF document text
- http://aotwresort.info/ckfinder/userfiles/files/diwutopokunudebegiseniguj.pdfIn PDF document text
- https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/16146527436886---754537788.pdfIn PDF document text
- https://alienaquatics.com/home/gb/public_html/ckfinder/userfiles/files/89323560822.pdfIn PDF document text
- https://candica.pl/ckfinder/userfiles/files/wewajozu.pdfIn PDF document text
- http://szguilong.com/userfiles/files/jinulewebut.pdfIn PDF document text
- https://mebelihome.ru/upload_picture/fexesukevaseneni.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=jak+odzyska%C4%87+sms+z+telefonu+androidPDF 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_off0000f82b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF82B	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off00011042.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11042	11012 bytes
SHA-256: `9669b9400294ca016af756c738d86f6569314b4cc7710c8bed7316e9999546cb`
`font_02_sfnt_off000129f2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x129F2	19708 bytes
SHA-256: `fd88b2c13cffbb46b16012ab5a7b2d10bf14ffa9b91b15918c8c3a39d0762ad6`

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