Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c68a727cd3f28e0…

MALICIOUS

PDF

76.5 KB Created: 2021-07-07 21:22:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 4ccb1f52664072efa3eff98d994fbb0f SHA-1: b4aab447357f7ca45b580d706ecf1e4ea823305e SHA-256: 9c68a727cd3f28e09c74122257123c3cbfa0d8c39810ed4dd8811a057cdf4a01
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. It contains a link farm pointing to multiple potentially compromised WordPress sites, suggesting a phishing or malware distribution scheme. The presence of embedded URLs and the nature of the heuristics strongly suggest it is used as a lure to direct users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/28387b527d776131a673d2a3f6f150a6/fizeminomepapinimoda.pdf In PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/4hdnvbdi90n8lqcrgti89kpmf9/36330847943.pdfIn PDF document text
    • http://thanhlapcongtykiengiang.com/upload/ck/files/soxifowevokuwurod.pdfIn PDF document text
    • https://rugsinc.in/UserFiles/files/zawowuneje.pdfIn PDF document text
    • https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16083f786e2d85---divogapimude.pdfIn PDF document text
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/n8t97hmq9qtd757v8d12pok251/39060105328.pdfIn PDF document text
    • https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160a145a622c89---95649300519.pdfIn PDF document text
    • https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/3797c22eb6bc70d2fa8704954a0cb356/teligixuzitazagomax.pdfIn PDF document text
    • http://purpledoorchurch.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082a574c0a38---72755676320.pdfIn PDF document text
    • https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/1c1f529ece736039240be8e0749c9316/57268548801.pdfIn PDF document text
    • https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/6e39ec8c70708dec5f061f0e2c83fa6a/5949188417.pdfIn PDF document text
    • https://walkandsmile.com/userfiles/file/56614067212.pdfIn PDF document text
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/i00nid9ihe9puivnb9pbn63dn3/21608549887.pdfIn PDF document text
    • https://completecollegestrategies.com/wp-content/plugins/super-forms/uploads/php/files/e03ebc4cacae16f00ab582fc62b04e0c/45233693220.pdfIn PDF document text
    • http://slsnn.ru/content/file/vozibutaxo.pdfIn PDF document text
    • https://krimgranit.ru/wp-content/plugins/super-forms/uploads/php/files/d007a9b5069a64e0222545f510cd7a70/14737305080.pdfIn PDF document text
    • https://wpsqld.com.au/wp-content/plugins/super-forms/uploads/php/files/642a6adb49db2d049d25e7df2ef6ec72/83101059138.pdfIn PDF document text
    • https://moveo-sport.pl/userfiles/file/kazufotuzozofagudunekigan.pdfIn PDF document text
    • http://lirealestatelitigator.com/wp-content/plugins/super-forms/uploads/php/files/27819983cdaa2eab4f341ac3f4b29fc2/87637036327.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4bc0153c3e---6043767029.pdfIn PDF document text
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/qkhom7vlfumr3ir967ifkclfn0/81144578506.pdfIn PDF document text
    • http://amon-syotengai.com/userfiles/file/mebewore.pdfIn PDF document text
    • http://kulturazebrak.cz/userfiles/xikidozedukexekazato.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=find+the+lcm+of+28+36+and+45PDF 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_off0000c7a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7A4 16300 bytes
SHA-256: 138e83431e161f5c1a3ed4fe6e249ddc7858fc30c14e72cf8fa52b0a7bb0536d
font_01_sfnt_off0000f236.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF236 11328 bytes
SHA-256: ba04f8438b06f8120cffdec5604700499a9e07305e0bcebfc56dcf4ba29af2ba
font_02_sfnt_off00010cb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CB5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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