Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7987fa6be6dc599…

MALICIOUS

PDF

90.9 KB Created: 2021-07-01 10:08:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 770935a1ab536c25229b4eaba9c9f82f SHA-1: 76f3db2020ef7bc1c089d3a6131c6a10f8faeced SHA-256: d7987fa6be6dc599a0a1f005475dc9b44586244aaa95d6df60309430914ef161
156 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It functions as a link farm, containing numerous URLs pointing to compromised CMS uploads and disposable hosting. These links are likely intended to lure users to phishing sites or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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 http://franklcalabreseattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/91452330189.pdf In PDF document text
    • https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/2534ce2c9a51bcfb20a2f4a3a4a30bae/28996804324.pdfIn PDF document text
    • https://sunsoftinfoway.net/ckfinder/userfiles/files/vewinulew.pdfIn PDF document text
    • http://smflow.in/admin/uploads/file/ridetaluwunepexinosa.pdfIn PDF document text
    • http://campcolefamilyreunion.com/clients/82065/File/97032451687.pdfIn PDF document text
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160d83f1fc2e48---jogemexulinepibididokasa.pdfIn PDF document text
    • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc5617df65c---87885005773.pdfIn PDF document text
    • https://readandenjoy.ae/userfiles/files/fepevinejalafovovoz.pdfIn PDF document text
    • https://contactfm.be/userfiles/files/dazelaredoxebo.pdfIn PDF document text
    • http://babywagen24.de/userfiles/file/jagajiwurojosuf.pdfIn PDF document text
    • http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160768ca620aac---konirogexifumolab.pdfIn PDF document text
    • http://21cedu.com/pds/userfiles/files/63786647090.pdfIn PDF document text
    • http://arslanemlak.come/file/kozafobusugefewi.pdfIn PDF document text
    • http://bezagsecurity.cz/userfiles/75943900302.pdfIn PDF document text
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/6fc9c16560fd82fb84357a942f3a5bf6/fijufuxuxa.pdfIn PDF document text
    • http://www.advokat.com/app/webroot/img/fck/file/veguvamamowum.pdfIn PDF document text
    • http://yao-cheng.com/uploadfiles/20210620185257.pdfIn PDF document text
    • https://bamfieldrental.com/userfiles/file/11032222101.pdfIn PDF document text
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ab8e7319d5---43841861657.pdfIn PDF document text
    • http://staging.impactredevelopment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dfa9517217---pomixedutodafatedekabi.pdfIn PDF document text
    • http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/a2b8a3e6fb82d17ac43ff7911367fc0d/54429940412.pdfIn PDF document text
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607e2b1d4318f---jejogewezokalamugade.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=the+perimeter+of+a+rectangular+sheet+is+100+cm+if+the+length+is+35+cm+find+its+breadth+also+find+its+areaPDF 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_off0000fe33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE33 11748 bytes
SHA-256: 95200241dd0181e43ba087efae4e87ea460dadd9b40d1ceedcb3ff349ce8bee8
font_01_sfnt_off000119b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119B9 16592 bytes
SHA-256: c50417a795948664eaf600b7995ea55b737b77e890717439bfe6afc76ca28e82
font_02_sfnt_off00014511.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14511 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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