Malicious PDF — malware analysis report

Static analysis result for SHA-256 946eaf73a9d6d4d5…

MALICIOUS

PDF

83.8 KB Created: 2021-09-13 22:58:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 6b41bb4d0cdcff5f6804f66bfb2af59c SHA-1: d7634e06f8bbe62e9a88ca82bc98460a59bf8cc2 SHA-256: 946eaf73a9d6d4d5c0f9d1a7fe206d747ff85b475c2ef4471e48a91e569b0cb1
184 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV detecting it as Pdf.Phishing.Trojan. The presence of numerous external URIs, including links to compromised WordPress uploads and disposable hosting, suggests a phishing or malware distribution attempt. The document body, though truncated, contains indicators of a download lure and callback phishing, consistent with the overall malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 8

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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 https://synerhu.ru/uplcv?utm_term=radhe+full+movie+download+filmywap PDF link annotation
    • http://gloteckr.com/upload/editor/file/teguzepolelediroze.pdfIn PDF document text
    • http://lammermoor.net/imagenes/file/poxojemogulesuk.pdfIn PDF document text
    • https://rlmahtani.com/userfiles/files/57508129561.pdfIn PDF document text
    • http://daearesort.com/FileData/ckfinder/files/20210913_8F94998A6EAECBBA.pdfIn PDF document text
    • http://st-johnson.com/Uploadfiles/files/36386439830.pdfIn PDF document text
    • https://onlineadda.net/ckfinder/userfiles/files/30006837433.pdfIn PDF document text
    • http://gancza.pl/userfiles/file/nomizi.pdfIn PDF document text
    • http://china-spec.ru/userfiles/file/nujiwetejezejimiwopevu.pdfIn PDF document text
    • https://ozmutludokum.com/userfiles/file/gavomunelefuvura.pdfIn PDF document text
    • http://methese.com/upload/files/34775241636.pdfIn PDF document text
    • http://mavelikaradiocese.org/rapha/ckfinder/userfiles/files/31408507409.pdfIn PDF document text
    • https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/161361503bde45---gasodifonupapakew.pdfIn PDF document text
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/1613b54ae67256---18733688099.pdfIn PDF document text
    • http://tplustech.com/images/ckeditor/files/35154130124.pdfIn PDF document text
    • http://5thaveseniors.org/userfiles/file/nupiza.pdfIn PDF document text
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134d570e066f---wozig.pdfIn PDF document text
    • https://www.borzabadi.com/ckfinder/userfiles/files/73872151877.pdfIn PDF document text
    • http://hanart21.com/files/userfiles/file/filotugozawagizu.pdfIn PDF document text
    • https://samsungdvm.net/upload/ckfinder/files/bexug.pdfIn PDF document text
    • http://netinflux.net/userfiles/file/34623109513.pdfIn PDF document text
    • http://beamstraffic.ae/amb/userfiles/file/82322549748.pdfIn PDF document text
    • http://abwcockeysville.com/uploads/files/lesukakevimak.pdfIn PDF document text
    • http://belloverde.net/emailer/file/65520666474.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133b49867385---kutasev.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2F0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fb02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB02 17792 bytes
SHA-256: a620ca56701203a8ef1621faa937a5f7a0436e5e0c105d6f13e8caddd2b367e1
font_02_sfnt_off00012882.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12882 10808 bytes
SHA-256: 66910389398e287c429072da7e89db29680f3c757ffabdcb89520c9a59a4902b

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