Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd49a7369c540a8c…

MALICIOUS

PDF

85.4 KB Created: 2021-09-07 11:24:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: ef0969797238e5bab8c462dae5869460 SHA-1: cde2e82b764051d9efe918ffcbe57271488795a7 SHA-256: bd49a7369c540a8c7bb99acf95bb11b6cad6a202de4f65ce985f9d1d381c9349
156 Risk Score

Malware Insights

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

This PDF was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains a link farm pointing to numerous unknown websites, suggesting it is used to redirect users to malicious content or phishing pages. The document body is unreadable, but the heuristics indicate a malicious intent through its structure and embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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 http://walthamclassof1985.com/clients/5/52/52060312c10aa816a718e90a19a6a7a1/File/dokakiwexukopikum.pdf In PDF document text
    • http://boxshop.mn/userfiles/files/nebanela.pdfIn PDF document text
    • https://europeancustomtailor.com/wp-content/plugins/super-forms/uploads/php/files/2b1ece8a0b8688db8eebb3bebef893c1/wefimepudebinenibaf.pdfIn PDF document text
    • http://greer2001.com/clients/e/ea/ea56749d84c1a2d7db36d2c51c833a37/File/malugugofovobel.pdfIn PDF document text
    • https://dedywiredja.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b731eda32d0---75565704361.pdfIn PDF document text
    • http://ri-rm.ru/userfiles/file/rosukeviruze.pdfIn PDF document text
    • https://thealloywheelcentre.co.uk/wp-content/plugins/super-forms/uploads/php/files/5675eb3ea20f79f0f5365ec930f0f7fc/wisapajifinanovinesun.pdfIn PDF document text
    • http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609e7f4fee07b---lafaje.pdfIn PDF document text
    • https://alienaquatics.com/home/gb/public_html/ckfinder/userfiles/files/dawifinav.pdfIn PDF document text
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbad049340---98071595221.pdfIn PDF document text
    • http://mail-business.ru/uploads/file/33248186989.pdfIn PDF document text
    • http://solarhomepage.ch/fckeditor/editor/images/file/48378491265.pdfIn PDF document text
    • https://www.champagne-auge-dascier.com/ckfinder/userfiles/files/ginisepovajebabiv.pdfIn PDF document text
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607583870b9ae---bukazowerewaso.pdfIn PDF document text
    • http://dobre-jaja.com/Upload/file/19773443474.pdfIn PDF document text
    • https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084df0ac4635---gamerufixurelamubezizojo.pdfIn PDF document text
    • http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160cf90e474f10---3443335292.pdfIn PDF document text
    • https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/37968f7aaa56f57c645280f247eb4654/fifuvibiwobipidezozegun.pdfIn PDF document text
    • https://www.ijestr.com/ckfinder/userfiles/files/75726713017.pdfIn PDF document text
    • http://aiswaryamatrimonials.com/fck_uploads/file/gezotilib.pdfIn PDF document text
    • http://vibrosystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16125999eafb3b---pekakalirupav.pdfIn PDF document text
    • http://forumts.com/ckfinder/userfiles/files/98652179270.pdfIn PDF document text
    • https://pracowniatechart.pl/fckpliki/file/79572124742.pdfIn PDF document text
    • https://lion-trading.co.uk/wp-content/plugins/super-forms/uploads/php/files/7e755afa6h9dfsfnk0hj29l3tr/wizodedimuxizufafalu.pdfIn PDF document text
    • http://henca.com/files/details/file/56338141736.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=taxable+amount+of+social+security+benefits+worksheetPDF 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_off0000e685.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE685 18080 bytes
SHA-256: 75d8d6327368c9d664a094f976ca713cf9762f655dc51b41b29933a53982ddda
font_01_sfnt_off00011536.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11536 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012d4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D4D 11200 bytes
SHA-256: 3341e00092a39238755cd0d7267697551b19d88456dd01ea047c66d92aedab78

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