Malicious PDF — malware analysis report

Static analysis result for SHA-256 69f010f0ca3a5f4c…

MALICIOUS

PDF

81.7 KB Created: 2021-09-03 23:30:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: f5562453809cf3c3498d1beb830d29a2 SHA-1: d134b8a4c143489d63603d2d35fdd3ca7eb7c71f SHA-256: 69f010f0ca3a5f4cb14cf995d621e7da4d0f1bf42d1c73cab2c1c3319bc6a762
236 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged by ML classifiers and ClamAV as malicious. It contains heuristics indicating it's a link farm and attempts to lure the user into disabling security software and executing commands via copy-pasting into a shell. The embedded URLs suggest a phishing or credential harvesting attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9833

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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.straightmyteeth.com/wp-content/plugins/super-forms/uploads/php/files/8478a8833174b5c4cc6b12241445756a/fawukonuruw.pdf In PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b63775b3705---97741258724.pdfIn PDF document text
    • https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/97tgiprmdehuekl4o9sq66qcdf/11104490015.pdfIn PDF document text
    • https://bruceautoservice.com/files/file/50104853258.pdfIn PDF document text
    • http://savalis.ru/userfiles/file/relaxabo.pdfIn PDF document text
    • http://rusiuojigalvoji.lt/wp-content/plugins/formcraft/file-upload/server/content/files/1608c58102b43d---19175556473.pdfIn PDF document text
    • https://heatingboiler.ca/fck_upload/file/17248199179.pdfIn PDF document text
    • http://sushimura1.com/uploads/files/ronawotano.pdfIn PDF document text
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c73bab0213f---tevijoxurawemawagovaf.pdfIn PDF document text
    • http://funperm.ru/content/file/4538305590.pdfIn PDF document text
    • http://stevis.cz/files/file/87135068646.pdfIn PDF document text
    • http://www.cenlajobinator.com/siteuploads/editorimg/file/65372847214.pdfIn PDF document text
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/160761d0b7ac48---75999249822.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a8c92299b52---lamefowasudixasafagufifat.pdfIn PDF document text
    • https://eseninternational.com/uploads/files/kuzapemoxigikosofewoleje.pdfIn PDF document text
    • http://aow.infogestnet.it/ckfinder/userfiles/files/wedoxofudusevolonur.pdfIn PDF document text
    • http://cesarrodarte.com/userfiles/file/99837253915.pdfIn PDF document text
    • http://amphorabeautyclub.com/campannas/file/gerebivumozobakuvo.pdfIn PDF document text
    • http://kpotplace.com/uploads/files/xesugufijobanerefafowi.pdfIn PDF document text
    • http://h-st.nl/bestanden/files/46169650602.pdfIn PDF document text
    • https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/0as5ic03m67gkp2ueus7r9no37/57073832787.pdfIn PDF document text
    • https://www.sesc.com.ua/wp-content/plugins/super-forms/uploads/php/files/044lcigbf7osukm29a85no67r0/jisikopimejonino.pdfIn PDF document text
    • https://daks-96.com/f/uploads/files/wegagijefugogixotulawali.pdfIn PDF document text
    • https://oiweld.com/wp-content/plugins/super-forms/uploads/php/files/a9eafe2569de5de99fba5c915cd00705/kadexevevowif.pdfIn PDF document text
    • http://leebyunghun.org/new/upload/board/files/rebumixalijiruke.pdfIn PDF document text
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087c96e5a452---41564416088.pdfIn PDF document text
    • http://munnarinfo.in/userfiles/file/juwodibenekirabul.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=uipath+extract+pdf+tablePDF 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_off0000da2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA2F 17952 bytes
SHA-256: cfe68db93db5086af34e83e048072a884c31fddf748176ac6eab11fde7f2b9d0
font_01_sfnt_off00010912.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10912 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12129 10576 bytes
SHA-256: da966b6309a78e4ab454440a2329748195ff0240e78582bc0b44fa457f6d1729

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