PDF malware analysis — malicious · 2e4ba381d07c3ca4

MALICIOUS

PDF

85.4 KB Created: 2021-09-07 04:19:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: 9c08c392c993ed731baed27d98f416a1 SHA-1: a886a8167738c5aa63de78a55c6a5fcd9e3d4f05 SHA-256: 2e4ba381d07c3ca40a9c7708a83179383084062ee42fefbe2efe25a1a88fca4b

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links pointing to compromised websites and disposable hosting, suggesting an attempt to redirect users to malicious content. The presence of multiple external URIs and link farms indicates a likely phishing or malware distribution scheme.

Machine Learning

Nyx PDF Classifier malicious score 0.9974

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://occahomesearch.com/userfiles/files/60966489383.pdf In PDF document text
- https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/e786841bd7db67233ad5a81824820caf/lopalobabifipitoduwofu.pdfIn PDF document text
- http://kibbkw.com/uploads/file/82111837042.pdfIn PDF document text
- http://www.restorationservice.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609fe91a89711---bedobosaruxesi.pdfIn PDF document text
- https://attackworkoutprogram.com/app/webroot/files/ckfinder/userfiles/files/97160415254.pdfIn PDF document text
- https://larrialdiak.es/files/galeria/files/dowisunalafidoz.pdfIn PDF document text
- https://playgametoday.ru/wp-content/plugins/super-forms/uploads/php/files/340fd467b950bcb1146eb937f945f5cc/vedakabegenefizazasudadi.pdfIn PDF document text
- http://morgancountyoh.com/userimages/xuvaximapa.pdfIn PDF document text
- http://extracam.es/app/webroot/arxius/file/walugabotav.pdfIn PDF document text
- http://linker-apps.com/files/16676297360.pdfIn PDF document text
- https://kebecelectrique.com/upload/editor/file/75300868822.pdfIn PDF document text
- https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adaf0fc0e2c---95480389531.pdfIn PDF document text
- http://thaoduocquyhiem.com/userfiles/image/file/15183907190.pdfIn PDF document text
- http://tatagz.com/uploadfile/files/95792051530.pdfIn PDF document text
- https://wheelmartthailand.com/image/upload/File/70574249673.pdfIn PDF document text
- http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160c2a3f1d976b---64826600409.pdfIn PDF document text
- http://5percent-design-action.com/upload/users/files/85309633962.pdfIn PDF document text
- http://beerskiboot.com/img/upload/file/botunorobaguta.pdfIn PDF document text
- http://ambiance-cinema.fr/wp-content/plugins/super-forms/uploads/php/files/1efe5305b18ac61c154f3abe11e299a7/25825864984.pdfIn PDF document text
- https://standardpromotion.com/images/upload/userfiles/files/37771792848.pdfIn PDF document text
- https://mintedimages.com/ckfinder/userfiles/files/1389155848.pdfIn PDF document text
- http://recrute.fr/files/files/dalodugozuxi.pdfIn PDF document text
- http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/161255aacec826---41825392493.pdfIn PDF document text
- http://faw-asia.com/image/upload/files/48043453918.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=manual+de+usuario+honor+10PDF 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_off0000e53f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE53F	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000fd51.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFD51	19724 bytes
SHA-256: `bc51fec58338ea466c6d21daaddb21f2359d50249df510547c83218b2dab8667`
`font_02_sfnt_off00013003.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13003	10516 bytes
SHA-256: `be4ae5269a572b5d010556e1edede0aaa30d6faaad03a49251453bcf8287a147`

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