Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e01882f9cc054b6…

MALICIOUS

PDF

81.6 KB Created: 2021-09-12 05:51:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: b017b8452785b2ee6bbd7d20bfa22660 SHA-1: e1a487b94063a7689c077e109b50bd45d98fdfc0 SHA-256: 8e01882f9cc054b653ad468fd1d3030cfdf106014f22cac05c639ef0fe2c40ee
184 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a link farm with numerous URLs pointing to potentially compromised WordPress sites and other disposable hosting, suggesting an attempt to redirect users to malicious content. The presence of a 'download button' lure further supports the phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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
  • 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.
  • 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
  • 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 http://vitalchurchesinstitute.com/files/file/vapudijisodipukubajuj.pdf In PDF document text
    • http://2478.ru/admin/ckfinder/userfiles/files/luzufalikujaj.pdfIn PDF document text
    • http://compsult.net/userfiles/file/22880360716.pdfIn PDF document text
    • http://onnetsolution.in/userfiles/file/76416393503.pdfIn PDF document text
    • https://kirbas.com/img/uploaded/file/xoliruwawijet.pdfIn PDF document text
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d520142709---33403132043.pdfIn PDF document text
    • http://capitolmetrophysicaltherapy.com/userfiles/file/27083386392.pdfIn PDF document text
    • https://pui-vital.ro/msg_media/file/jifojuliwirimasikoremud.pdfIn PDF document text
    • http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/4b19972bdcf8770f59b9c8ac0eb7220f/bazekorofu.pdfIn PDF document text
    • http://benthanhsgfarm.net/images/uploads/files/21089735259.pdfIn PDF document text
    • https://jordan.si/dokumenti/file/kavitov.pdfIn PDF document text
    • http://bioscipublisher.com/files/upfiles/file/panewuvoj.pdfIn PDF document text
    • http://qwerty.pl/_data/file/mezosusatetadevobef.pdfIn PDF document text
    • http://gezond-trakteren.nl/kasteel-doornenburg-img/bestandenfile/zuwidiwezorapam.pdfIn PDF document text
    • http://ecilingirler.com/resimler/files/8579919454.pdfIn PDF document text
    • https://bodzlomu.com/userfiles/file/62182017093.pdfIn PDF document text
    • http://nfc-lampang.com/user_img/files/wejirawizopijanini.pdfIn PDF document text
    • https://contabil-fiscal.ro/mm/file/31613062079.pdfIn PDF document text
    • https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/94171792ddc63e6877a875eb0de751b2/28751178838.pdfIn PDF document text
    • http://barrospizzadb.com/uploads/files/gufanaxa.pdfIn PDF document text
    • https://emartdeko.pl/galeria/file/67459696181.pdfIn PDF document text
    • https://aqua2go.pl/galeria/file/4079147375.pdfIn PDF document text
    • http://smm-mm.com/uploads/news_file/88803004855.pdfIn PDF document text
    • http://md-servicios.com/userfiles/file/24531495724.pdfIn PDF document text
    • https://zifu-tech.com/app/webroot/userfiles/files/zujuruvizawuvoxanakiwok.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=wireless+transfer+from+android+to+pcPDF 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_off0000d999.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD999 17956 bytes
SHA-256: 039508120b018e0354b8232e897810cd8a4237178914b354043f3657158e7a44
font_01_sfnt_off000107a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107A2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011fb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FB9 10772 bytes
SHA-256: 78c604b9862edd2e9472230704dc3f489b7992df5059c158560df05927462780

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