Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f6cc70ba9566adf…

MALICIOUS

PDF

117.0 KB Created: 2021-09-02 05:48:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: ae0e40cfbfb2b39cbafd74b3c8b2dddb SHA-1: 29dc0221b004ae731f0715efe637bbaeb43dcd4a SHA-256: 7f6cc70ba9566adf8fa586727c5f8b352c83597ec889ee4a34921e0fc5e4bbf8
156 Risk Score

Malware Insights

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

This PDF was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It functions as a link farm, with numerous URLs pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to redirect users to malicious sites. The presence of multiple external URIs and link farm heuristics indicates a likely phishing or SEO manipulation attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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://flexi-cms.com/uploads/file/dafibugotitilev.pdf In PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609f1e5dac4d1---ledenexibokuviwimopupora.pdfIn PDF document text
    • https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/1612a6d8b81f7c---xomerededupirulujumuzo.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b8b7fba69c3---xemobinadexogufujoja.pdfIn PDF document text
    • http://sosnovgeo.ru/userfiles/file/lunegepidalijazinitav.pdfIn PDF document text
    • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/c764fbd58af93cdb2289afcfdd72c1e5/57113988450.pdfIn PDF document text
    • http://www.restorationservice.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16087718d7e232---26562718467.pdfIn PDF document text
    • http://atreve.eu/ubezpiecz/obrazy/file/2133384671.pdfIn PDF document text
    • http://uleshuzatshop.hu/files/file/kulifotixebamozunedade.pdfIn PDF document text
    • https://afd.me.uk/wp-content/plugins/super-forms/uploads/php/files/deg9f68295ohqu78f2t071ie4f/xalolikajilukidigodijika.pdfIn PDF document text
    • https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab5a1e4a1fc---gufujakaburiwur.pdfIn PDF document text
    • http://n-production.com/upload/fckeditor/file/92448691402.pdfIn PDF document text
    • https://gikguamerica.com/userfiles/file/fixetipesep.pdfIn PDF document text
    • https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/e4ea2152c19533bd47d3af261324c870/60120403519.pdfIn PDF document text
    • https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/d0a2f21606055e8d05a0914b9a497f22/47381316058.pdfIn PDF document text
    • https://equalland.com/uploads/File/badodogirolitepi.pdfIn PDF document text
    • https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/0t4bql4uq1utc1mneksui2uq3l/81078841378.pdfIn PDF document text
    • http://opalsolar.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608043feac02f---57252820918.pdfIn PDF document text
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c26f53bbfc---48409329148.pdfIn PDF document text
    • http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/6evo3mpm0cp06qlmulpkp00si2/juruseratuwose.pdfIn PDF document text
    • http://geredekombiservisi.com/userfiles/file/74913040615.pdfIn PDF document text
    • https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/16080fa1ee9adb---78783437416.pdfIn PDF document text
    • https://encoyun.com/calisma2/files/uploads/91375977609.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=ffxiv+level+60+weaponsPDF 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_off000160a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x160A2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000178b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x178B4 19772 bytes
SHA-256: 89ef7f09f592996cd0909420b91c8bafc68ddbfa8e5dcf7017ab8666646b72a9
font_02_sfnt_off0001ab93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AB93 10672 bytes
SHA-256: f184d3c41df69ada26f21cdda6d62799f2b473e262ba8e7f3a84a39c7b01f02d

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