Malicious PDF — malware analysis report

Static analysis result for SHA-256 009a899bc15e6dfa…

MALICIOUS

PDF

75.0 KB Created: 2021-09-23 03:29:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 41d4022e08b9547cb5b79c9dc2db07e9 SHA-1: 33bec546c20668109cf9e7a46e33eb13e621f961 SHA-256: 009a899bc15e6dfabf7a068a84a9378696add0229e2c673a8f717bdae2fc2e04
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a high number of embedded links, many pointing to disposable domains, which is characteristic of phishing or malware distribution campaigns. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites, potentially for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://calendarsunrooms.com/userfiles/files/15747595250.pdf In PDF document text
    • https://nhatngudongkinh.phapluatvietnam.com/upload/ckupload/files/zupumig.pdfIn PDF document text
    • https://ceccardolj.ro/userfiles/file/mowagisuj.pdfIn PDF document text
    • http://atthaya.com/file_media/file_image/file/62209442795.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/16138664c529e3---43404622886.pdfIn PDF document text
    • https://tramtron.vn/uploads/files/files/3925335306.pdfIn PDF document text
    • http://cl-pub.com/files/files/76857969181.pdfIn PDF document text
    • https://2-view.org/home/view/public_html/ckfinder/userfiles/files/30477368927.pdfIn PDF document text
    • http://mvdeastudio.it/userfiles/files/52299751822.pdfIn PDF document text
    • https://spbmworld.com/anaeter_capital/siteadmin/userfiles/files/xorapori.pdfIn PDF document text
    • http://lasermedia.cn/userfiles/file/gibopetelatawixas.pdfIn PDF document text
    • http://rtm-plus.ru/ckfinder/userfiles/files/92308452699.pdfIn PDF document text
    • http://joyerialaplaza.com/ckfinder/userfiles/files/wosoxo.pdfIn PDF document text
    • http://www.moyekolodin.com/files/93528948151.pdfIn PDF document text
    • http://guidesdugrandlarge.fr/images/import/file/wabevozira.pdfIn PDF document text
    • https://thehouseproduction.net/file/xarinawifa.pdfIn PDF document text
    • http://jeykrishnaclub.com/images/file/judojepulare.pdfIn PDF document text
    • http://nenorm.com/files/files/25166109989.pdfIn PDF document text
    • https://bnbtravels.com/ckfinder/userfiles/files/41403338310.pdfIn PDF document text
    • https://macjiboter.macjahisa.si/files/file/22852044625.pdfIn PDF document text
    • https://hanomanberjaya.com/contents/files/42047597918.pdfIn PDF document text
    • http://n2nnetworks.com/files/others/7785690661.pdfIn PDF document text
    • http://vasa-project.org/fckupload/file/74099150839.pdfIn PDF document text
    • http://manuale.aziendasulweb.it/userfiles/files/pemogana.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=how+to+add+channels+to+mobdro+on+firestickPDF 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_off0000bc74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC74 11052 bytes
SHA-256: cc56780ff05ca98fdb1c0b4e942311524a4c99a73d8831b2af02ef5b30519788
font_01_sfnt_off0000d5f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5F2 18644 bytes
SHA-256: a419ebc45fe8b07ffdbcf6e1dc791bc198aeb98a16bc9f5bb53fd3edd5609779
font_02_sfnt_off00010655.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10655 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1