Malicious PDF — malware analysis report

Static analysis result for SHA-256 edba5a6866b63b0b…

MALICIOUS

PDF

78.3 KB Created: 2021-07-05 18:58:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: ed24c089e115346af151e81d321757ee SHA-1: e38170fb2c32162dbae07a77c9a85965362d5fd6 SHA-256: edba5a6866b63b0b3c0d9fa8fe53587494d6355c2c12db70e25ddc9e92edaac2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics as malicious, including a ClamAV detection for 'Pdf.Phishing.Trojan'. It functions as a link farm, containing numerous embedded URLs that point to compromised websites. These links are likely intended to lure users to phishing sites or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

Heuristics 6

  • 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.
  • 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://pistant.ru/uplcv?utm_term=jelly+belly+pet+rat+gummi+candy PDF link annotation
    • https://panificioilcavaliere.it/userfiles/files/60025393215.pdfIn PDF document text
    • http://thoitrangvabaoho.com/Images_upload/files/sosewavelikuvadisuzoganis.pdfIn PDF document text
    • http://luluscafeonline.com/uploads/files/46461280983.pdfIn PDF document text
    • http://esistore.be/userfiles/file/40090225113.pdfIn PDF document text
    • http://www.photobreak.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bac25884823---julanemelekijex.pdfIn PDF document text
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1606feff4e2c49---fovanejuwelesixibenitila.pdfIn PDF document text
    • https://gmnavarra.es/ckeditor/files/12252617226.pdfIn PDF document text
    • http://olsztyntransportmedyczny.pl/userfiles/file/50066836760.pdfIn PDF document text
    • http://sb-78.ru/files/file/21175921622.pdfIn PDF document text
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/160c5899946dc4---xipixipobufidukovujofo.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f1721bfed4---sopogef.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/7718233839.pdfIn PDF document text
    • https://chung-pei.com/userfiles/file/9885029194.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e0c358a68a0---48467263123.pdfIn PDF document text
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/4ebdfdbde1910e775da8879a101f75a5/60634226080.pdfIn PDF document text
    • https://www.propertyfilevault.com/wp-content/plugins/super-forms/uploads/php/files/717f042754d3fe6fca610923df2c015b/49262134998.pdfIn PDF document text
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/160878d16a0030---zabumupovolagagavuxugob.pdfIn PDF document text
    • http://phuvuongcorp.com/luutru/files/75619866171.pdfIn PDF document text
    • http://braintradingbcn.com/wp-content/plugins/super-forms/uploads/php/files/7b87bcadebea8e0f3208a3ec2816a30b/xafegemamimileseso.pdfIn PDF document text
    • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/64b50cc3c23389260e9da353383f945c/15406347623.pdfIn PDF document text
    • https://wisserarm.nl/app/webroot/files/userfiles/files/xusimesugefakubalagepi.pdfIn PDF document text
    • https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/05cj9sdmterfbavl202tgnn6p5/vazik.pdfIn PDF document text
    • https://numberonerevolution.it/file/vules.pdfIn PDF document text
    • http://sushikyototogo.com/uploads/files/zexemiludowoniwasuzev.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/mmj0phosr7632hr37js5du3tc0/fudigevuvinisaf.pdfIn PDF document text
    • http://tplustech.com/images/ckeditor/files/88993586546.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

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_off0000ce34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE34 10916 bytes
SHA-256: 339c45b40556477d1d4c57e2192faef04495cc8e8145a041bb03bdb9e1920168
font_01_sfnt_off0000e70d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE70D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ff1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF1F 17152 bytes
SHA-256: 22ab4ac500a39e3dd6b3afc3f9905eb5403d83f87deb1871e1d7c8dacc3c146c

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