PDF malware analysis — malicious · af1c6305b060e82c

MALICIOUS

PDF

83.6 KB Created: 2021-09-15 19:21:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24

MD5: 64c0121492de12d74e6b5cfb9f3ec847 SHA-1: 244c8ec27e4aff9e2eaa64238e6505f3d2a3e6ad SHA-256: af1c6305b060e82ccdf4fb81135027692f94de2add9723532ca251cfce8a08e2

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a link farm pointing to numerous compromised websites, suggesting an attempt to redirect users to malicious content. The presence of external URIs and link farms indicates a likely phishing or malware distribution vector.

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 https://dancleland.com/img/upload/file/21504346510.pdf In PDF document text
- http://stagelight.pl/userfiles/files/423888120.pdfIn PDF document text
- https://glaze-metalart.com/upload/files/dozozofukituxaderovapar.pdfIn PDF document text
- http://abwninemile.com/uploads/files/kesama.pdfIn PDF document text
- http://aivieksteslaivas.lv/userfiles/file/58394614649.pdfIn PDF document text
- https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/0gau8m4c193od8nduqcdkbr8b0/jifux.pdfIn PDF document text
- https://www.verimevzabavu.cz/ckfinder/userfiles/files/24237342803.pdfIn PDF document text
- http://www.cenlajobinator.com/siteuploads/editorimg/file/72607950113.pdfIn PDF document text
- https://demo-calson.garment-pro.com/ckfinder/userfiles/files/nagabiw.pdfIn PDF document text
- http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ce261aed4f---zewetewebifu.pdfIn PDF document text
- http://ssteelelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/rusugew.pdfIn PDF document text
- http://aksaaydinlatma.com/img/editor/image/file/zukonukor.pdfIn PDF document text
- http://siripanyalamphun.com/user_img/files/45543538368.pdfIn PDF document text
- http://basumati.com/app/webroot/ckfinder/userfiles/files/bukot.pdfIn PDF document text
- https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613022f365886---rivepogipobelum.pdfIn PDF document text
- http://radtel-sport.pl/userfiles/file/robawexin.pdfIn PDF document text
- https://vwb.mrv-educationservices.com/content_file/files/53378347644.pdfIn PDF document text
- https://deitratech.com/userfiles/file/17725580173.pdfIn PDF document text
- https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/bde2e6f74e3fe3f555c6931385e54192/jafezeko.pdfIn PDF document text
- http://ulleungroadtour.com/FileData/ckfinder/files/20210909_EABD81BEC138E507.pdfIn PDF document text
- https://mingyi-lock.com/data/file/userfiles/files/69868561600.pdfIn PDF document text
- http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/16133b569ec9d5---19913675070.pdfIn PDF document text
- https://balbok.net/admin/ckfinder/userfiles/files/3699966526.pdfIn PDF document text
- https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/1613ff937cf26c---21670831.pdfIn PDF document text
- http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16138ea247998d---vitisotedilegelerin.pdfIn PDF document text
- https://diphong.com/uploads/4695676322.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=hack+games+app+apkPDF 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_off0000e429.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE429	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000fc40.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFC40	10240 bytes
SHA-256: `b6a75b94517c57a3b04241f04b7cb9189b03eda30435bf1eb3a6e77cfca2414b`
`font_02_sfnt_off00011349.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11349	17520 bytes
SHA-256: `4e6fe38660acb36f8263a3546260bb0474c9596da94dc35a5f3198ca7a63649b`

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