Malicious PDF — malware analysis report

Static analysis result for SHA-256 96438b817ddbc950…

MALICIOUS

PDF

83.4 KB Created: 2021-09-01 02:13:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 8c5337d45109af43de5ee1994f08011e SHA-1: 95b5d39ee96583aecc5dc43ba7f5424b9f572a1a SHA-256: 96438b817ddbc950f4aaa62e0e3060467645792b38256f825abc1a5f71e5c820
156 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous URLs that form a link farm, many pointing to compromised websites or disposable hosting, suggesting an attempt to redirect users to malicious content. The presence of external URIs and the overall structure indicate a likely phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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://smidgel.ru/uplcv?utm_term=blake+griffin+kendall+jenner PDF link annotation
    • http://arcdesantmarti.com/biocop/Images/images-editor/file/79355460875.pdfIn PDF document text
    • http://ekhoron21.mn/uploads/files/zeratesemisikuwopuvote.pdfIn PDF document text
    • http://indianspringhomes.net/userfiles/files/gevadoropewiriguv.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/c0a8f57c7d2510b8ddbdeffb8d7a8c15/37383888119.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/1607d23339faa4---gosikifavogi.pdfIn PDF document text
    • http://alwaditrading.com/userfiles/files/jixanirudezuwajojeze.pdfIn PDF document text
    • http://e2ingenieros.com/ckfinder/userfiles/files/ninixazikudegazebis.pdfIn PDF document text
    • http://dichvuhieuchuan.com/upload/files/64596063444.pdfIn PDF document text
    • http://www.canadavisaservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c5f82106d1---43638675574.pdfIn PDF document text
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1610a0d9b80a59---motapejelog.pdfIn PDF document text
    • http://brooklynsmokeshops.com/admin/images/file/46662075613.pdfIn PDF document text
    • https://ryokanclub.com/FileData/ckfinder/files/20210808_82EDD01E425BFAF1.pdfIn PDF document text
    • https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b267dd1f386---wakore.pdfIn PDF document text
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a0c93d1b890---vakixujumeko.pdfIn PDF document text
    • http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/160b8d48f0a0fc---46515469925.pdfIn PDF document text
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b5d02e367e---fokuxajogutu.pdfIn PDF document text
    • http://bouncebodysupplements.com/newerac2c/userfiles/file/rudipotidemigolesukopufak.pdfIn PDF document text
    • https://cepatdaftargroup2.com/contents//files/xobidufepelepupok.pdfIn PDF document text
    • http://cngwalk.com/fckeditor/userfiles/image/54853558783.pdfIn PDF document text
    • https://candbco.com/ckfinder/userfiles/files/63993241649.pdfIn PDF document text
    • http://xn--knstlerische-biografie-arbeit-lbd.ch/userfiles/files/papol.pdfIn PDF document text
    • http://cokhihoaiduc.com/uploads/files/68935982834.pdfIn PDF document text
    • http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/1607ec85560e7e---nixofukamazukenetomupa.pdfIn PDF document text
    • http://www.julitolaschools.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba27b434ff3---wavelitowosaputuwuv.pdfIn PDF document text
    • http://muszempilla.com/files/file/47467421411.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_off0000e362.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE362 17120 bytes
SHA-256: 1f09fa9000e7f99c8d7b437741763bc969ddd2ccd9caed72ec9de556794c4f56
font_01_sfnt_off00010fd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FD6 10420 bytes
SHA-256: b6fb6c68e2cd80d17aeb1c989109b227f65596ef25565c7fad18dafd0ff9ebf0
font_02_sfnt_off0001273d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1273D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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