Malicious PDF — malware analysis report

Static analysis result for SHA-256 07fc5995308ce87e…

MALICIOUS

PDF

71.4 KB Created: 2021-09-02 21:10:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 79652d5e2c8b9fca360e807820aa2c02 SHA-1: 1a941dad42c181041589e4f2bd9041db2eb839c7 SHA-256: 07fc5995308ce87e978572243302cda219d859ecc8289077c3cf7bc4d533be9c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm hosted on multiple compromised websites, suggesting a phishing or malware distribution attempt. The presence of numerous unknown URLs and the ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicate malicious intent. While no scripts were directly extracted, the overall structure and heuristic firings point towards a phishing lure designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://www.finestkindcharter.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606db2fd474d5---83243675679.pdf In PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b01cfb1195a---zinuzuga.pdfIn PDF document text
    • http://schokofontaenen.de/idata/setekifojevo.pdfIn PDF document text
    • https://saraelv.no/wp-content/plugins/formcraft/file-upload/server/content/files/160d209060a5c3---58414777954.pdfIn PDF document text
    • https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/b3ee59b420f81c7e4330150b6eb39154/duxajoluj.pdfIn PDF document text
    • http://gat-asset.com/CKEdit/upload/files/93639346981.pdfIn PDF document text
    • http://gyogytornasziget.hu/uploads/files/633278982.pdfIn PDF document text
    • http://masan315.net/board/imagefile/file/27598432076.pdfIn PDF document text
    • https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093a5e30fbd9---mosadixododasiwiwo.pdfIn PDF document text
    • https://trexanh.net/upload/files/3645020822.pdfIn PDF document text
    • https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/471376e2b69d93a9bd3c692e1c23d9a2/fegadodadatisipe.pdfIn PDF document text
    • https://lapalettedesarts.fr/gestion/file/xatulejugukalikolatiz.pdfIn PDF document text
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e0036de4691---wanowiwo.pdfIn PDF document text
    • https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/b5s66e7dh1i2crf7fp7usikspr/60742363800.pdfIn PDF document text
    • http://growourworld.com/clients/83159/File/riguzawupasolagiwav.pdfIn PDF document text
    • https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/6mi092il7faujjots5l88nf6ra/ponibolizimanuf.pdfIn PDF document text
    • http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c60865cd80---48744365359.pdfIn PDF document text
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fcd5d4c9ce---17977124696.pdfIn PDF document text
    • http://mywymc.com/userfiles/file/95544376124.pdfIn PDF document text
    • http://wwpokebar.com/uploads/files/tijejovokizaxigufu.pdfIn PDF document text
    • http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16085849a94cf5---95629007275.pdfIn PDF document text
    • https://bamfieldrental.com/userfiles/file/vozomakudafizosoj.pdfIn PDF document text
    • https://grafitpoint.ru/wp-content/plugins/super-forms/uploads/php/files/b98b9aac80948512af9c159737b09644/88981263914.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=download+nitro+pdf+11+kuyhaaPDF 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_off0000b802.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB802 10740 bytes
SHA-256: 9515079b5ba6061979a1220f1a90b6762b97d42f6207eff867f45a9db9402e45
font_01_sfnt_off0000d0ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0AC 15204 bytes
SHA-256: 73018598cf7b325686ecf4a53aa768bec4ac53e0855b1579ed485d33289cf1e2
font_02_sfnt_off0000f780.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF780 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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