Malicious PDF — malware analysis report

Static analysis result for SHA-256 0384218214cf456f…

MALICIOUS

PDF

85.3 KB Created: 2021-06-26 01:54:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: b7256196f821a34848c558116abafc57 SHA-1: 4844b92f159ab251f23c7142f3c155bb378e602a SHA-256: 0384218214cf456f41fdbfad86e4f4493389dd59012232265a866ca7af3d442d
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The heuristics reveal that the document contains a link farm pointing to compromised CMS upload storage and disposable hosting, suggesting it's designed to redirect users to malicious sites. The embedded URLs and the nature of the heuristics strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://wastran.ru/uplcv?utm_term=the+cast+of+girlfriends+guide+to+divorce PDF link annotation
    • http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609bac4a7f3d2---38623770115.pdfIn PDF document text
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/cs0h7dhvtclsl0j74fl08jp9br/73756187425.pdfIn PDF document text
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d64e5984aaf---63376245621.pdfIn PDF document text
    • http://cokhitienvuong.com/uploads/files/tujomutisudakafol.pdfIn PDF document text
    • http://hzzxtl.com/UploadFile/file/20210618175724926.pdfIn PDF document text
    • http://saokienviet.com/uploads/image/files/65032971303.pdfIn PDF document text
    • https://wagaskar.com/media/jezalimujog.pdfIn PDF document text
    • https://beaufortbond.com/wp-content/plugins/super-forms/uploads/php/files/e84f4eb8906724b58b50f68db9957b19/pajuduwabonovipuwufuw.pdfIn PDF document text
    • http://prttour.ca/FileData/ckfinder/files/20210612_483BBAAD065B5B4E.pdfIn PDF document text
    • http://bradleyhillsapartments.com/demo/uploads/contents/file/lupipexiradom.pdfIn PDF document text
    • https://vrindaindia.com/php/joseph/uploads/file/tufuvewojameraxa.pdfIn PDF document text
    • http://ofipapel.org//ckfinder/userfiles/files/27456183523.pdfIn PDF document text
    • https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/9455rl28gcjbgngioith49v7hv/72467853735.pdfIn PDF document text
    • http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/160756df845987---famebeg.pdfIn PDF document text
    • https://hostmegasoft.com/calisma2/files/uploads/9911883527.pdfIn PDF document text
    • http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160943098716b6---88880465960.pdfIn PDF document text
    • http://africansafaris-spain.com/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/85081899371.pdfIn PDF document text
    • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/1607f72634dc09---81564371116.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1609d5c9613c84---87643348476.pdfIn PDF document text
    • http://hkalc.com/userfiles/wapujak.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078d7b1e1e72---81905153073.pdfIn PDF document text
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0595bb2ddc---88020301909.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_off0000ea19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA19 10884 bytes
SHA-256: ac5c7e910e875104232d198b0a90ee9b0bd88a5dd0531a609aedc4c2d02db81f
font_01_sfnt_off0001030e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1030E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011b20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B20 17104 bytes
SHA-256: f55f20175ac7ad28947d49eca5d56c5aad3ff7bacb6b1b285c1e097281a57609

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