Malicious PDF — malware analysis report

Static analysis result for SHA-256 06201a82ad6cf713…

MALICIOUS

PDF

86.7 KB Created: 2021-06-27 16:16:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 1abdc4285119d2c9431cc1bb97744d36 SHA-1: ecd3fb67258d7ad2b3fe8eb7ba0bb4e63f322554 SHA-256: 06201a82ad6cf713ce99ec915b6eea2eee5d094d1d4fad51a7cc0c480c1af4ad
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to multiple compromised websites, likely for phishing or malware distribution. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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 https://ketchas.ru/uplcv?utm_term=praying+the+rosary+online+audio PDF link annotation
    • https://www.amiunaorchestra.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160cc612452985---lomilalijin.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb7767b200d---59752081791.pdfIn PDF document text
    • https://lawyerupsmart.com/tempimg/file/dakopokif.pdfIn PDF document text
    • http://skyfestival.kr/ckfinder/userfiles/files/69645751208.pdfIn PDF document text
    • https://www.breastcancerfoundation.in/wp-content/plugins/super-forms/uploads/php/files/a8fb037e68b005782524c0570640e21c/dijamarajomomof.pdfIn PDF document text
    • https://apparel.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/e39e5177d35bddae861141689178ce7a/15292361372.pdfIn PDF document text
    • https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2ceea1ceac---33037674366.pdfIn PDF document text
    • https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/b5c3cfcacb21c33b04b8d677c7cd245f/49908143451.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097b22a5299d---6975484089.pdfIn PDF document text
    • https://flvirginia.com/wp-content/plugins/super-forms/uploads/php/files/b68ef7e983685b342c0b6d36ccb37171/42372537869.pdfIn PDF document text
    • http://aelma.com/sites/default/userfiles/file/vodalawulirabanamufa.pdfIn PDF document text
    • https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/b8432eefe9202beba7a8046dc25b2e71/87931938437.pdfIn PDF document text
    • http://hrjok.com/uploadfile/file/40199957242.pdfIn PDF document text
    • http://epoxidice.ro/mm/file/pelifinafozopevuwela.pdfIn PDF document text
    • http://cdmatik.com/uploads/file/60986626383.pdfIn PDF document text
    • https://dotcomtravelegypt.com/userfiles/files/tenazumezurapav.pdfIn PDF document text
    • https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084c43a1fb99---58796037632.pdfIn PDF document text
    • https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/614ce56f1d114885c789fcebcfeae4bf/lazoxiwuw.pdfIn PDF document text
    • https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/4d3e72c0aa5882e5dd29066ac2b13b59/48694674507.pdfIn PDF document text
    • https://www.azembay.com/wp-content/plugins/super-forms/uploads/php/files/ahuk57kapqk4fghvlo354vfhtl/dasekemexiperarawamizod.pdfIn PDF document text
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bf9cf6cdc3a---kafegererurigofituluvo.pdfIn PDF document text
    • https://martabaktelor.com/contents//files/puraxumuromapevozuw.pdfIn PDF document text
    • http://musikpark-live.de/userfiles/file/13148396348.pdfIn PDF document text
    • http://granitemountainranch.net/userimages/43057063736.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_off0000eddf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDDF 10740 bytes
SHA-256: f3a8942d9cb9e3fecbf76d2550755b7ad1441d9a26b06ee6206a3aef1b1f921c
font_01_sfnt_off00010648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10648 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011e5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E5A 17412 bytes
SHA-256: a784500d07a970153c1a7d775e4413bd6e0caf8b8f5769167eca7e40e0f5f164

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