Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe6cacb7e6589ca7…

MALICIOUS

PDF

91.1 KB Created: 2021-09-08 02:53:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 42cb5b48970c1a187b2bd303841bcebe SHA-1: 723785bc6d2402296ec276c57472043587786bf3 SHA-256: fe6cacb7e6589ca73522c7310710a22a47a599281623b0a5d598555284427322
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1071.001 Web Protocols

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a link farm with numerous URLs pointing to compromised or disposable hosting, suggesting an attempt to distribute malware or phish for information. The presence of a 'download button' lure further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://drtamerturan.com/file/20237247047.pdf In PDF document text
    • http://bright-mineral.com/uploadfile/file/2021062900385429.pdfIn PDF document text
    • http://sofia-es.tokyo/yamituki-n/uploads/files/40300845071.pdfIn PDF document text
    • http://nofatrans-int.com/userfiles/file/71672325352.pdfIn PDF document text
    • https://ficsllc.com/wp-content/plugins/super-forms/uploads/php/files/f7connp9931377h640fa251ooq/83064244295.pdfIn PDF document text
    • http://nujhimachal.in/img/uploads/files/57652218443.pdfIn PDF document text
    • http://bijverhoeven.nl/uploads/files/77510276645.pdfIn PDF document text
    • https://topjobsnepal.com/ckfinder/userfiles/files/4301946004.pdfIn PDF document text
    • https://havadisname.com/upload/ckfinder/files/rupoxowax.pdfIn PDF document text
    • http://oticonshop.net/ckfinder/userfiles/files/25371401750.pdfIn PDF document text
    • http://cokhiminhhien.com/media/ftp/file/279274301.pdfIn PDF document text
    • http://synowka.pl/galeria/file/kubesipeponupokinup.pdfIn PDF document text
    • http://szolnokepul.hu/userfiles/file/dedupelapuwoji.pdfIn PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/r7mm2pre013lvl3k2v2bqauc63/xozoki.pdfIn PDF document text
    • http://pnmanagementsolutions.in/uploads/77903605033.pdfIn PDF document text
    • http://cdenito.net/userfiles/file/52495699250.pdfIn PDF document text
    • https://beribuket.ru/wp-content/plugins/super-forms/uploads/php/files/3c5dc11a7e11c1e6d3beaf85a9d70ad3/xabozupekunoxunat.pdfIn PDF document text
    • http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16087ff204f68a---26745175350.pdfIn PDF document text
    • https://observatoire-omic.org/documents/file/mimedawupitasonitupebip.pdfIn PDF document text
    • https://primewestelectrical.com/wp-content/plugins/super-forms/uploads/php/files/c41e70c9fd337d9e6ceaf08a013f245c/futimusamotitatozige.pdfIn PDF document text
    • http://hb1004.com/userData/board/file/kakipumuxigalekolevexilex.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=download+nanda+nic+noc+2018+pdfPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fda4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDA4 18332 bytes
SHA-256: d9048e7595f5ec2b3f5060125850ace24be6466fc078118673d8b9dfeba79388
font_01_sfnt_off00012de4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DE4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000145fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x145FB 10704 bytes
SHA-256: c442c69e567703e6b584f9b4e6a23074ee81ebdb6dda6145cde550f87e568db3

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