Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3007fdbd0b32e94…

MALICIOUS

PDF

80.9 KB Created: 2021-09-23 20:32:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 96cbd7fa2c2d7fd0f6c85756aa3c923b SHA-1: 705b70499986d80fcbd95ac10f33f5c4abd3bc2c SHA-256: e3007fdbd0b32e9488ba36605eaa621fb47b1052ccfd700a568f8f870d9d10e9
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, many of which point to compromised or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://oniceh.ru/uplcv?utm_term=call+recorder+hide+app+apk PDF link annotation
    • http://www.valathors.com/ckfinder/userfiles/files/68572634007.pdfIn PDF document text
    • http://www.satunatc.ac.th/ckfinder/userfiles/files/94647779068.pdfIn PDF document text
    • http://pk.mo/userfiles/file/3846329016.pdfIn PDF document text
    • https://jazykovytabor.topenglish.sk/app/webroot/gallery/files/64227791077.pdfIn PDF document text
    • https://wentworthre.com/wp-content/plugins/super-forms/uploads/php/files/d3eacea14de7774665a76990445dda80/kenubi.pdfIn PDF document text
    • http://www.protectakoteasia.com/ckfinder/userfiles/files/80118249854.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1613e6ec11b930---vufifagafamejukonipijix.pdfIn PDF document text
    • https://www.domaine-de-la-ferme.fr/ckfinder/userfiles/files/96397267706.pdfIn PDF document text
    • http://finchamauto.com/pics/22668556049.pdfIn PDF document text
    • https://myvideoclasses.com/ci/userfiles/files/fizinexenemojojafe.pdfIn PDF document text
    • http://problemconsulting.com/img/download/files/bevemumuxapujulusim.pdfIn PDF document text
    • http://plymouth-logs.co.uk/ckfinder/userfiles/files/suketubilanoxigo.pdfIn PDF document text
    • https://rarahil.org.np/ckfinder/userfiles/files/wisujatom.pdfIn PDF document text
    • http://ablerexthailand.com/userfiles/files/noduxol.pdfIn PDF document text
    • http://ucg-eg.com/userfiles/file/73936452627.pdfIn PDF document text
    • http://wirheiraten.de/images/file/15673102792.pdfIn PDF document text
    • http://mawaevents.com/uploads/file/27998523615.pdfIn PDF document text
    • https://fptica.ru/images/file/79152731170.pdfIn PDF document text
    • https://orsam.org.tr/paketler/ckfinder/dosyalar/files/15261233273.pdfIn PDF document text
    • https://ikomsolutions.com/admin/userfiles/file/pivigusetuza.pdfIn PDF document text
    • https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613b492e29b0f---32910198976.pdfIn PDF document text
    • https://agronlogistics.com/userfiles/files/tazefavolawijumivekin.pdfIn PDF document text
    • https://limsurempat.com/contents/files/jineludiwizapetixe.pdfIn PDF document text
    • https://hebatkeren88.com/contents/files/bibijiziris.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_off0000d57f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD57F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ed96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED96 10364 bytes
SHA-256: 6ecccfa4a72535e45c4378f3750e1a6f3235f7c0d2406f088a170e1dabc17c4a
font_02_sfnt_off0001050d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1050D 18908 bytes
SHA-256: af031223d320632b1895188516b9d1019cffbfaee78dc6b7701e467809e481c0

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