Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0d6907ec1d889cb…

MALICIOUS

PDF

74.5 KB Created: 2021-09-01 02:57:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: f5e0b062ac00e5be81b3d70d2fc70113 SHA-1: 0134a7b1b9719317778dd1a157c714a6da3de2b4 SHA-256: d0d6907ec1d889cb67328450527414aabd29292962ea39a2ebfd613eabd00b54
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document contains a link farm pointing to multiple compromised websites, likely intended to redirect users to malicious content or phishing pages under the guise of offering free music downloads. No scripts were extracted, but the PDF structure and heuristics suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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 http://tcsm62.org/uploads/news/file/lebufovokasavifixu.pdf In PDF document text
    • https://www.scilights.com/wp-content/plugins/super-forms/uploads/php/files/5aedb45f7d74f2cbb576ce556b878cd1/57953105969.pdfIn PDF document text
    • http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160d4d8df52b4b---7514781348.pdfIn PDF document text
    • https://palezieux.com/ckfinder/userfiles/files/norunilapirofesadizitun.pdfIn PDF document text
    • https://flammerouge.ch/userfiles/files/fazawetimubidovudafifa.pdfIn PDF document text
    • http://boulderdivorcelaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160daf1e74d3bc---55268727237.pdfIn PDF document text
    • http://farashimirooz.com/files/limupuxogujenemix.pdfIn PDF document text
    • http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c3a74e15a2---bejakatujobozetomoka.pdfIn PDF document text
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071197721ee9---20536886665.pdfIn PDF document text
    • https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/biond2esv2rjubb4smbhsla5vh/pazitekimemumuradovuge.pdfIn PDF document text
    • http://citygclub.com/ckupload/files/kaliwunolibesuditiluma.pdfIn PDF document text
    • https://rockyshairsalon.com/wp-content/plugins/super-forms/uploads/php/files/r3ii37hca5uig4in5quqov2955/54027545750.pdfIn PDF document text
    • http://francescasciortino.it/userfiles/files/rijozepawanu.pdfIn PDF document text
    • https://labelmarket.pl/data/file/63330039066.pdfIn PDF document text
    • http://raylutickenterprises.com/userfiles/files/xesajokabix.pdfIn PDF document text
    • https://harrisitalia.it/uploads/file/xiwesokigaseref.pdfIn PDF document text
    • https://quatcongnghieput.com/uploads/files/11919375286.pdfIn PDF document text
    • http://mirandatutoringcentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608f4b4950ee3---levijujizejobokuro.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/vjugk4a885r3tbtf9hl2hvkua0/mixes.pdfIn PDF document text
    • https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/6e1f6e0dee3ecc1c03fecc7f6d8eddf9/zematoj.pdfIn PDF document text
    • https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/85d25csjn773svbceck4juqp76/30416775901.pdfIn PDF document text
    • https://anthonygillant.com/userfiles/file/mikerupewexedolijuw.pdfIn PDF document text
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/160d2404ae39c1---livasota.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=download+flac+music+for+freePDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c0a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0A7 10724 bytes
SHA-256: dd8cbbc4eba8e3f1a0bdb2efc29b314412c4096432cfadd890809b366e46560a
font_01_sfnt_off0000d94e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD94E 16272 bytes
SHA-256: c815b7e2745b101461e4167f882768e88f2b86582de3afbec3f4e76d194dc104
font_02_sfnt_off00010354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10354 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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