Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeaf49a92fa6fede…

MALICIOUS

PDF

78.5 KB Created: 2021-08-15 23:55:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 85814b14889b959a9eddbbbbfb882b0b SHA-1: ee6d409b71a345223457184fe0c39fef848d8918 SHA-256: aeaf49a92fa6fede639b1a2a659b1e72881b1b9250ad9d099453ef1c4ebf2bde
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. It functions as a link farm, containing numerous URLs pointing to various websites, many of which appear to be compromised WordPress installations or disposable hosting. The primary purpose seems to be directing users to potentially malicious content or phishing sites, aligning with a spearphishing attachment attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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://pixomot.ru/uplcv?utm_term=2002+ford+ranger+workshop+manual PDF link annotation
    • http://thuephotocopytaihanoi.com/upload/files/xadotadaw.pdfIn PDF document text
    • https://kop-trans.pl/uploads/userfiles/files/xafusuwabitogurowuridel.pdfIn PDF document text
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160820ecd43a22---kofujalalakugurofevutev.pdfIn PDF document text
    • http://print-resource.co.uk/ckfinder/userfiles/files/21681879059.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a8bc7b758e1---wamukewuzufujo.pdfIn PDF document text
    • http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/8c07a7764697d08e958b30f50116e633/86703084982.pdfIn PDF document text
    • https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/6bee85e3c379548e8d1b6ff1d43e2dfe/7627668957.pdfIn PDF document text
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160779ca352ea0---38086318924.pdfIn PDF document text
    • http://artpolyclinic.com/file/files/86923265192.pdfIn PDF document text
    • https://fleuriste79.fr/ckfinder/userfiles/files/48373423183.pdfIn PDF document text
    • http://asja-doll.ru/userfiles/file/15474948338.pdfIn PDF document text
    • http://mkconline.com/landmark/ckfinder/userfiles/files/kadupifelo.pdfIn PDF document text
    • https://iltuosarto.com/file/jupodapezatuxixabovu.pdfIn PDF document text
    • https://patoman.ro/ckfinder/userfiles/files/59416338094.pdfIn PDF document text
    • http://bclgrouptt.com/userfiles/file/18991730466.pdfIn PDF document text
    • http://gomientrung.vn/uploads/image/files/18813391706.pdfIn PDF document text
    • http://getampedmag.com/ckfinder/userfiles/files/55624711709.pdfIn PDF document text
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160983bf935b27---jelalomaleputofasogag.pdfIn PDF document text
    • http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160727c735018e---kupiwikinuxewura.pdfIn PDF document text
    • http://outspokenholland.com/userfiles/fckFile/20210618082150.pdfIn PDF document text
    • https://whitesal.com/data/images/file/4413_20210518040330.pdfIn PDF document text
    • http://desagresbrts.com/clients/34568/File/46814528469.pdfIn PDF document text
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077e76038ebd---37970814445.pdfIn PDF document text
    • http://backupcenters.com/userfiles/file/zuxumuded.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD98 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e5aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5AA 17000 bytes
SHA-256: e75336d6e6c539e589731624fd8771f68f44b4e313922513eb176ec718a689dd
font_02_sfnt_off000111bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111BF 11180 bytes
SHA-256: d6f721f3c2c4f736d7bd2a4d302611c5f8623363e4b9c35162d3845d4d452859

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