Malicious PDF — malware analysis report

Static analysis result for SHA-256 19d6292fabaf70fe…

MALICIOUS

PDF

64.0 KB Created: 2021-06-10 16:41:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2e3b4a995f85bb0a536fa12072279fc SHA-1: 5afbee63fb5c661fabf660ec97d42fb648114fa5 SHA-256: 19d6292fabaf70fe219bfbdbe2feb635f099c4d07314ba4bc9ceeef952daad15
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The sample is a PDF containing embedded JavaScript, which is a common technique for delivering malicious content. The heuristics indicate the PDF acts as a link farm, directing users to compromised websites hosting further malicious files. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9622

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://allytemp.ru/uplcv?utm_term=marshmello+song+download+mp4
    • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fa2f046433---fozemovavubawogulol.pdf
    • http://classiccar-jp.com/js/upload/files/wusanixanununifapeg.pdf
    • https://www.explosivo.gr/wp-content/plugins/super-forms/uploads/php/files/760a4ad942cc810c54ed0a5da969ca28/29323438045.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1ffec342d3---83428467913.pdf
    • https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/92lmo3eb50ge17h1rhhvt7t342/76754093105.pdf
    • https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4d004bd801---36897320588.pdf
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/41fd8b6e8987e91433497d7fcc786ca2/kevametubupomarazimiz.pdf
    • https://www.rowtheerne.com/wp-content/plugins/super-forms/uploads/php/files/da6c3d126b348837686a0406873aba69/nujaropomal.pdf
    • https://arerp.kr/data/file/%5C/fuxaxipewoja.pdf
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160707e50ebabd---topupigonizosaf.pdf
    • https://www.hotelamoha.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a6da9c5484e---59149945972.pdf
    • https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/eg103pj6n6datmrg725aub8ps4/gegatizinejen.pdf
    • http://lifemartrealestateconnect.com/wp-content/plugins/super-forms/uploads/php/files/731g6jgj1rjff6p90i3le2qd94/xufup.pdf
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/cbb247327968caa2d88b94b92af62154/zixabafodeb.pdf
    • http://www.assignproject.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609eccce58cae---kazizomukazopedolosam.pdf
    • http://shinies.ru/img/lib/file/barexilesuwajovu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef47.bin
5b25cb24c92295990a94ba84ec6910071f9200c0fd01b7309b530d6949030269		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF47 5556 bytes

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