Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cb62514a98baf7e…

MALICIOUS

PDF

84.7 KB Created: 2021-09-02 18:24:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 637d16c904320b73b73f9bcacd95b01d SHA-1: df412bc0755ee97646cdc30dda5e7d817a9426b2 SHA-256: 5cb62514a98baf7e888e5052122c12976502aad45d0073572f371271e0e8ba7c
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains a link farm pointing to numerous websites, many of which are hosted on compromised CMS platforms or disposable domains. These links are likely intended to redirect users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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://traffictkt.com/viking1/uploads/files/mijikavugakupejubepi.pdf In PDF document text
    • https://www.litesourcenc.com/wp-content/plugins/super-forms/uploads/php/files/86dde1866e95505aa92f2466fa165899/82287441723.pdfIn PDF document text
    • http://bagiez.com/userfiles/file/61648428204.pdfIn PDF document text
    • https://cedria.es/DOCUMENTS/FotosFCKEditor/file/lajorogozod.pdfIn PDF document text
    • https://jiptv.nl/wp-content/plugins/super-forms/uploads/php/files/hkbad7untat2pkp5jf716883el/larelivojanomipop.pdfIn PDF document text
    • https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/08en41cctlk9bbhr13ppuqnv81/39932988320.pdfIn PDF document text
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a48511c0de0---37062225083.pdfIn PDF document text
    • http://hoacanh.net/luutru/files/futigozopifowuzorigod.pdfIn PDF document text
    • http://worldofpacifiers.com/editor_uploads/system/files/rubugusideparemoragamu.pdfIn PDF document text
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cc09800ab6---35453846100.pdfIn PDF document text
    • http://jaatkinson.com/userimages/96002677127.pdfIn PDF document text
    • http://kursadowicz.pl/Upload/file/47912335732.pdfIn PDF document text
    • http://effektfilm.de/files/file/zaxewixebozabexolugebo.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/16112f9c45ef4c---34380757826.pdfIn PDF document text
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/16123a45aaf90b---tufaxafubemanevazexo.pdfIn PDF document text
    • http://rauvuonsach.net/images/uploads/files/dowavabekibigukeberujaxi.pdfIn PDF document text
    • http://parkergeneralcontractors.net/userfiles/file/10377689783.pdfIn PDF document text
    • http://emrc.ie/upload/imagecontent/file/28592873079.pdfIn PDF document text
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/3d9a6c53ce29884755d92b5ebf24194d/83097701231.pdfIn PDF document text
    • http://3mfa.com/images/editor/files/21017649057.pdfIn PDF document text
    • http://www.ellisrasbetonwerke.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160889c551dac8---30754131680.pdfIn PDF document text
    • http://smartcevent.com/clients/871459/File/32463566406.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=plural+nouns+worksheets+for+grade+3PDF 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_off0000e26e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE26E 10992 bytes
SHA-256: fb04f7c0eb8d03495dde5abb82b23da2ddb88a24916f9b34733fa2afc6f51a9d
font_01_sfnt_off0000fbdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBDF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000113f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113F1 18984 bytes
SHA-256: 3dd013970150408495d81f6a89327dd4146fe89e01ba7bcd36f647160ef08c26

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