Malicious PDF — malware analysis report

Static analysis result for SHA-256 80aeb5bce9e09f61…

MALICIOUS

PDF

83.4 KB Created: 2021-06-29 01:47:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 67049c6dc9d0c1af1cca59bf1475211e SHA-1: 5b82e5636e2eacdb084655ba8d04ed5dcab94966 SHA-256: 80aeb5bce9e09f6113809b10c3add526c5715be81e7b5e170ca10dee98c85c37
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The file contains a link farm pointing to multiple compromised websites, likely serving as a lure to download further malicious content. The presence of multiple PDF links on compromised CMS upload storage suggests an attempt to distribute malware disguised as legitimate files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://www.properties-thassos.com/wp-content/plugins/super-forms/uploads/php/files/al6ej6ltv3q31ousn72r5booh1/wigulusumazojexipedelino.pdf In PDF document text
    • http://jtour.vn/userfiles/file/banulasobevujubibupevo.pdfIn PDF document text
    • https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/6644a0dd69cb8df76a33bed0937c902a/54421099487.pdfIn PDF document text
    • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1607edfdb91521---kuxusadalizabebewopavisa.pdfIn PDF document text
    • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160ca42b07fcf6---33625884362.pdfIn PDF document text
    • https://www.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607ec50b6acdf---88278096264.pdfIn PDF document text
    • https://office-agglo-larochelle.fr/userfiles/file/75208378208.pdfIn PDF document text
    • http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16079068730e6b---64539358394.pdfIn PDF document text
    • http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/160827aef15582---liwanididizuremupozakekel.pdfIn PDF document text
    • http://zulassung4you.de/bilder/file/19978663561.pdfIn PDF document text
    • http://sfera-vlad.ru/img/file/wiwirimurelesuzojarasideg.pdfIn PDF document text
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bdb7d3a25d3---botivaw.pdfIn PDF document text
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609adc47770d1---rejejozafajem.pdfIn PDF document text
    • https://www.mii.net/wp-content/plugins/super-forms/uploads/php/files/4e25b85e04fdf3c247e0d2d5b5acaa82/lesudomiz.pdfIn PDF document text
    • https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/0c667d9750f424486839ba09240ff14c/81838484803.pdfIn PDF document text
    • http://burchiellati.com/file_fck/file/tekebukuzupamo.pdfIn PDF document text
    • http://hawks79.com/clients/85064/File/37405428187.pdfIn PDF document text
    • http://massimomoroni.it/userfiles/files/23460693930.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/9s8ad4u5dp9v2iekocfpgo38f7/69513209557.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/160bac88a4c620---20049621517.pdfIn PDF document text
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c137593aba1---jowarojujidizefuwixot.pdfIn PDF document text
    • https://sckstone.com/wp-content/plugins/super-forms/uploads/php/files/ef29b3d677727b79691c4b8c153272ba/jigipetaruli.pdfIn PDF document text
    • https://dgaspcsm.ro/ckfinder/userfiles/files/97063157096.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=free+crochet+bunny+patterns+large+toyPDF 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.

FilenameKindSourceSize
font_00_sfnt_off0000e351.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE351 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fb63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB63 16788 bytes
SHA-256: eb182803520ef1000d282a65225ac5250c1059bcc69e5f165c87a0d10cb4b245
font_02_sfnt_off00012720.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12720 10892 bytes
SHA-256: 1033b8eb520d63dc3b03f7c609bc2b018774da14290b368909eca4a072157cd9

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