Malicious PDF — malware analysis report

Static analysis result for SHA-256 e101896e54cb5aee…

MALICIOUS

PDF

92.4 KB Created: 2021-08-20 00:18:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: b6c4ca3b0c72ec92b9186a7189e974c1 SHA-1: a50ecc652174bdb9aaa1c57507d6ad5c7408832e SHA-256: e101896e54cb5aeea83c3b844b9ad7c4e51554183213b5486a310ed2230bd335
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF file detected as malicious by ML classifiers and ClamAV. It contains numerous external URIs and link farm patterns, suggesting it is designed to redirect users to potentially malicious websites. The presence of embedded URLs and the overall structure indicate a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://queure.ru/uplcv?utm_term=8th+grade+sight+words PDF link annotation
    • http://alacarte-design.de/userfiles/file/nuriwekagumisurasolediko.pdfIn PDF document text
    • https://kingdomofgodmn.org/userfiles/files/53490038593.pdfIn PDF document text
    • http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160f2e35cc5300---69707416559.pdfIn PDF document text
    • https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/jvkgqp3lq2c9nhn0cfnmnh1u5p/sozawemidabepek.pdfIn PDF document text
    • https://ncsccalgary.com/userfiles/files/xawurevaxigixivu.pdfIn PDF document text
    • http://atrsara.ir/resource/files/sevafabepufesozo.pdfIn PDF document text
    • https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/007f3942cebc60b5d246a9a7347204d5/pupesajajobif.pdfIn PDF document text
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0f138e5e36---67099373624.pdfIn PDF document text
    • https://flyags.com/editorResources/file///71302247877.pdfIn PDF document text
    • https://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/2a52872edd41c4cc74485e15020a788a/taximoxogegilalenura.pdfIn PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/160aa61959155e---25760674983.pdfIn PDF document text
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/16087424a2a965---nivakuva.pdfIn PDF document text
    • http://rudolphi.nu/userfiles/file/gozabidetetekefo.pdfIn PDF document text
    • http://dsagco.com/Upload/file/43372904928.pdfIn PDF document text
    • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/16099e922b6844---favulomakoxaradomezuparaz.pdfIn PDF document text
    • https://martensmgt.com/business_school/uploads/file/bagobigozolitatebe.pdfIn PDF document text
    • http://staropolski.net/Upload/file/fadovurevifexi.pdfIn PDF document text
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/6b0c4c9b5379e67932e269e6f4b52c88/detam.pdfIn PDF document text
    • https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/nt079upu57qnu98o2v9bb892kg/86404209885.pdfIn PDF document text
    • http://fabiocaronearchitetto.com/userfiles/files/82804845562.pdfIn PDF document text
    • https://1877painters.com/FCKeditor/file/zotemujonumobidemufokuniz.pdfIn PDF document text
    • https://mobiligennari.com/userfiles/file/38927741067.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_off000105df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105DF 17568 bytes
SHA-256: 4343413ff852acca94eaef6ff4f0ebb763ca74adc687def0c2b7d11b61e22938
font_01_sfnt_off000133fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133FD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014c14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C14 10576 bytes
SHA-256: 05551952d421ebf047357443a37be973c0414ec934313ec665b433ef4bd738dc

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