Malicious PDF — malware analysis report

Static analysis result for SHA-256 dae854aa04cdadcb…

MALICIOUS

PDF

70.0 KB Created: 2021-09-27 06:16:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: a042ef3f1d69d01e9100e3a63de3afc6 SHA-1: b048780fc91334e7440d02b29b3c4bec9f6eafba SHA-256: dae854aa04cdadcb6a7099b5d5f89381a57ae1f878275405c5bdc680a17ce1c0
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links pointing to compromised websites and disposable hosting, suggesting it functions as a link farm for phishing or malware distribution. The presence of external URIs and link farms strongly suggests an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9916

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://irlanc.ru/uplcv?utm_term=is+there+a+ps+vita+emulator+for+android PDF link annotation
    • https://portofcrotone.com/dati/upload/file/15582543048.pdfIn PDF document text
    • https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/033cbf97da2614a41b114191f5733040/sazovesesaxifej.pdfIn PDF document text
    • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/61mat6k7skqg7guhhorfauahag/tizezibukogopenotov.pdfIn PDF document text
    • http://djk-winkel.de/images/uploads/file/boleriximovo.pdfIn PDF document text
    • http://colegiosantarosa.com/uploads/imagem/file/sadesozopapabanejurinubu.pdfIn PDF document text
    • https://contemporaryteas.in/admin/uploads/file/53274934334.pdfIn PDF document text
    • https://sirikulsteel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16150fdbb8a97f---32074228161.pdfIn PDF document text
    • https://dwitunggaljaya.com/sitefiles/file/sunikaposajagulezupevifi.pdfIn PDF document text
    • http://ktcyy.com/ckfinder/userfiles/files/33176264130.pdfIn PDF document text
    • https://universal4shipping.net/userfiles/file/negomivetikametipejul.pdfIn PDF document text
    • https://www.weldcor.ca/public/ckfinder/userfiles/files/23147127543.pdfIn PDF document text
    • http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614b10c77e6f8---paputeguxezaguwel.pdfIn PDF document text
    • http://goldstecq.com/userfiles/file/26458906452.pdfIn PDF document text
    • http://themadthinker.com/temp/vinney/HTML/userfiles/file/16860093125.pdfIn PDF document text
    • http://schuetzenfest-hemeringen.de/ablage/userfiles/files/guwewaw.pdfIn PDF document text
    • http://onfireinteriors.com/userfiles/malomato.pdfIn PDF document text
    • https://unitedfightalliance.com/ckfinder/userfiles/files/xuparore.pdfIn PDF document text
    • http://ativn.com/upload/file/bawukatubexadesikekan.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/t9d08hafbjtrelk0919t7kach7/daguzeruvalekutize.pdfIn PDF document text
    • http://tarp.longi.tw/uploadfiles/nowupag.pdfIn PDF document text
    • http://kimyasaldubeller.com/upload/ckfinder/files/57239622904.pdfIn PDF document text
    • http://matchedtubes.de/userfiles/file/64562908171.pdfIn PDF document text
    • http://helloslow.com/data/userfiles/files/xofuxokumajagegokuxexu.pdfIn PDF document text
    • https://www.alapan.org/fckimages/file/sabukubo.pdfIn PDF document text
    • http://gzperson.com/uploadfile/files/96689049014.pdfIn PDF document text
    • https://ceilford.org/wp-content/plugins/super-forms/uploads/php/files/d9f10648fd45e700af706cfbf90b17f0/31818693371.pdfIn PDF document text
    • 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.

FilenameKindSourceSize
font_00_sfnt_off0000b4df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4DF 14252 bytes
SHA-256: a2fe19aacbcf3ebc71e2b3d60de1a29503071ea0a6603d5b43d6d99a1df27927
font_01_sfnt_off0000d88f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD88F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f0a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A6 10880 bytes
SHA-256: b15d322adb9d50c002b3baf40c024c5b757cc28f99bccd5c58a4f2b8c0e6e5be

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