Malicious PDF — malware analysis report

Static analysis result for SHA-256 76ea67ff0f3156e9…

MALICIOUS

PDF

72.2 KB Created: 2021-09-04 11:15:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 74fa75e8f6f8d3bb5a41fb1f62d2971b SHA-1: fa5d561570fe7b895983f2f17f34af99342e9dd0 SHA-256: 76ea67ff0f3156e95b4a64f20caf408048183f9c6badcaaeb4326eaeecce4e7f
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to numerous external URLs, many of which are hosted on compromised WordPress sites or disposable domains. The embedded URLs and the overall structure suggest an attempt to distribute phishing content or download further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://archism.ru/uplcv?utm_term=bosch+battery+charger+c7+manual PDF link annotation
    • https://master.plus/wp-content/plugins/super-forms/uploads/php/files/b7b0a8a1e0c579025625af09f4545179/91350290831.pdfIn PDF document text
    • https://muguet.fr/sites/default/files/file/vixogozesalib.pdfIn PDF document text
    • http://wuxihemei.com/ckfinder/userfiles/files/20210811_074621.pdfIn PDF document text
    • https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b30b80ba1fd---fimorudijurisad.pdfIn PDF document text
    • http://leebyenghun.com/new/upload/board/files/88916021697.pdfIn PDF document text
    • http://revucue.com/ckfinder/userfiles/files/linivusulidodunegevos.pdfIn PDF document text
    • http://sgyscom.com/upload_fck/file/2021-8-27/20210827210933817274.pdfIn PDF document text
    • http://musorcentrum.hu/files/article/file/12985761740.pdfIn PDF document text
    • http://maxidmum.com/images/upload/fck/file/68609790045.pdfIn PDF document text
    • https://cian.hr/userfiles/file/50876047778.pdfIn PDF document text
    • http://pahsclassof2005.com/clients/d/d6/d61c4c031b0f3af13d3e88110ef3a3e1/File/jopujavameledixaxe.pdfIn PDF document text
    • http://tunglamgarden.com/images/fck/file/joxavugoxokopozuvimamube.pdfIn PDF document text
    • https://www.glasswindowequipment.com/wp-content/plugins/super-forms/uploads/php/files/dd84f2f45b64a74d617e74dc44c09599/77942025369.pdfIn PDF document text
    • https://ivanamihic.com//files/13019871104.pdfIn PDF document text
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/6399dfa7c578303dbc35c292a465a39c/88029282496.pdfIn PDF document text
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/6954e0e08c5aacb1b99bd41d0fb9b5ec/lusilerinexoreneperup.pdfIn PDF document text
    • https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/a21ea28fb5822b5f06af7ab83a3a96c9/53969988874.pdfIn PDF document text
    • http://xn--12cbg9dihj7egda2g6a7dceb1d2cp4nvgf4f.com/datas/files/notez.pdfIn PDF document text
    • http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16070fda261296---59971551989.pdfIn PDF document text
    • https://visaonline-vn.com/wp-content/plugins/super-forms/uploads/php/files/eoup7c9ri72jonpde7bjpneem2/54212150501.pdfIn PDF document text
    • http://www.physedu.in/newsite/userfiles/files/tekunumeka.pdfIn PDF document text
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/94eb9cdefa5f04dc67a4187537ea33ec/lopoponabeda.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/e3c0f6c6e9a6aabe9617e92491f10383/suvugojejog.pdfIn PDF document text
    • http://malir-naterac.info/UserFiles/File/98304711140.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_off0000ba9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA9A 11040 bytes
SHA-256: 6d43d6a5bc7f8a2bee89ac9baaa02d87bfd0980d494c37d70f7610907398e344
font_01_sfnt_off0000d452.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD452 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ec64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC64 15260 bytes
SHA-256: 293e283fdd004d09bb404ea156697593e64695fac2b135ecadb00f2e76dbf329

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