PDF malware analysis — malicious · bd0f74a3732f17e7

MALICIOUS

PDF

89.0 KB Created: 2021-07-07 19:45:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27

MD5: 1b83a98e58881d3a05242a11217735fd SHA-1: d614b26ce764e906f1fb1466fd1e58ea52bed42f SHA-256: bd0f74a3732f17e7e39a1be8c26605f27f1383c1645592020896a8db258b2751

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, with numerous embedded URLs pointing to compromised WordPress upload directories. These links likely serve as a distribution mechanism for further malicious content, aligning with a phishing or malware distribution attack pattern.

Machine Learning

Nyx PDF Classifier malicious score 0.9835

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/160bdc9e08c964---fumewipe.pdf In PDF document text
- http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16085000d4bee9---84759792645.pdfIn PDF document text
- https://abandassociates.com/ckfinder/userfiles/files/vosaku.pdfIn PDF document text
- https://arvikabc.com/images/uploadedimages/file/65774861314.pdfIn PDF document text
- http://msslink.ru/userfiles/files/mefap.pdfIn PDF document text
- http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ec74ad554a---14823155256.pdfIn PDF document text
- http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607b969e4317f---govumodazuremarezafonijav.pdfIn PDF document text
- https://sodigital.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c4d2a064d67---gelavivevixobewefiji.pdfIn PDF document text
- https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608b20469d6ca---43236102513.pdfIn PDF document text
- http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16087b7789bd02---22596701830.pdfIn PDF document text
- https://lawina-radom.pl/files/file/lokifezakekoja.pdfIn PDF document text
- http://nova-auto.com/upload/kegid.pdfIn PDF document text
- https://ludifrance.fr/userfiles/file/sisupiludawuwutoro.pdfIn PDF document text
- http://akgikorea.com/file_upload/fck_upfile/file/movaxek.pdfIn PDF document text
- https://www.potterycommercials.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608eccf32b19e---56822972927.pdfIn PDF document text
- https://tahubunting1.com/contents//files/tixizipefaleres.pdfIn PDF document text
- http://transsnabstroy.com/userfiles/file/kubigapizot.pdfIn PDF document text
- https://www.lightingsolutionsinc.net/wp-content/plugins/super-forms/uploads/php/files/c3eb6b36ffaf6fd1a19c911ef229c8dd/basemebowulukumoni.pdfIn PDF document text
- https://www.mysmilestudios.com/wp-content/plugins/super-forms/uploads/php/files/d0a349d462b1c45487540c2b656c4310/pixax.pdfIn PDF document text
- http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/tmmf7309mojofvkmab10nc7420/94881152985.pdfIn PDF document text
- http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb2b642e701---zuxefajijekopujesa.pdfIn PDF document text
- https://actioncoach.com.my/wp-content/plugins/formcraft/file-upload/server/content/files/160aa19a52c21d---22172201590.pdfIn PDF document text
- https://theemperorsoldclothes.co.uk/wp-content/plugins/super-forms/uploads/php/files/lluf7r9hhuc1p3v3t51a68if61/kegijef.pdfIn PDF document text
- https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/9e2e4a65d8f3dfa7c474ff8155a970dc/97259805302.pdfIn PDF document text
- http://ibconsulting.it/userfiles/files/2254860271.pdfIn PDF document text
- http://mobydick-band.de/fckdata/file/34292685841.pdfIn PDF document text
- http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609e70c19f24d---mulevokadoki.pdfIn PDF document text
- https://acornschoolcharleston.org/wp-content/plugins/super-forms/uploads/php/files/b5605352bb5936484fa593ca08114823/1584614870.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=eve+was+created+from+adam%27s+ribPDF 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_off0000f4d3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF4D3	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off00010cea.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10CEA	10796 bytes
SHA-256: `19e95d21e7faf31c54d69e390e3bfce4a324adf44016e3f46e6eb87175ab7797`
`font_02_sfnt_off000125eb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x125EB	18056 bytes
SHA-256: `9134819e669a05966a19bda9cbda59a519d8087c39597c86104b449412596c86`

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