Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2e5f8a278a6257f…

MALICIOUS

PDF

78.8 KB Created: 2021-09-03 20:08:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: dd3a72304207679713d6713d43eb65ac SHA-1: bde93d20f8c324fc9617b591dd35c06c064fbfe0 SHA-256: d2e5f8a278a6257f750d06ac4588fa311f5c6413d114507abaad65b23833f757
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was flagged by ML classifiers and ClamAV as malicious. It contains a link farm pointing to multiple compromised WordPress sites and other disposable hosting, suggesting an attempt to redirect users to malicious content. The presence of numerous external URIs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic indicate a likely phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

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://crysiq.ru/uplcv?utm_term=coloring+worksheets+for+kindergarten+free PDF link annotation
    • http://www.logistiekverbeteren.nl/ckfinder/userfiles/files/78846626528.pdfIn PDF document text
    • https://www.infrascale.com/wp-content/plugins/super-forms/uploads/php/files/9ceb180695669360b49529d63098372e/32941704818.pdfIn PDF document text
    • https://alakharia.com/public_html/userfiles/file/26129248937.pdfIn PDF document text
    • http://auto-spec.ca/fck/file/86115960233.pdfIn PDF document text
    • https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/1b329695bf3d11fb52bd58e88d11f763/54264122997.pdfIn PDF document text
    • http://izhar-energy.com/userfiles/file/jomilapenosofi.pdfIn PDF document text
    • https://austarpharma.com/upload/files/70885894008.pdfIn PDF document text
    • https://securityguardsupply.org/php/uploads/file/kojezijiwigozidezar.pdfIn PDF document text
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/51fcfaca88f3b5839c4c72b8257b3861/46300366829.pdfIn PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077408a8a0d3---92295548384.pdfIn PDF document text
    • https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/73eefd59b2f3b7e1b31c601c349ef0b9/66681355122.pdfIn PDF document text
    • https://growmytruck.com/wp-content/plugins/super-forms/uploads/php/files/bef4854df9829acca98ee8874034f374/sekebumopigamas.pdfIn PDF document text
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/1rhhinlssku3onb2ocqbjp54rk/wajikarirexiranuwefawe.pdfIn PDF document text
    • http://dobraukraina.org/sites/all/sites/dobraukraina.org/files/wupopapiwarisemaren.pdfIn PDF document text
    • http://np-laser.com/upload_fck/file/2021-6-21/20210621040613275818.pdfIn PDF document text
    • http://chpcentre.com/files/file/59561211979.pdfIn PDF document text
    • http://champaigncursillo.com/userfiles/file/vinefonelefizesegimizi.pdfIn PDF document text
    • http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16077c57fc9b8c---dikos.pdfIn PDF document text
    • https://ivfnna.gr/wp-content/plugins/super-forms/uploads/php/files/5256ee5b01d1beb5793acd4500e9c951/75584050637.pdfIn PDF document text
    • http://controldellaves.com/app/webroot/arxius/file/60814766147.pdfIn PDF document text
    • https://www.zaantraining.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609c973f0ac72---wikusekofizosofebogumalim.pdfIn PDF document text
    • http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3d3de2b6b4---munotelixudaf.pdfIn PDF document text
    • http://sequirk.ie/userfiles/file/81066743188.pdfIn PDF document text
    • http://mobydick-band.de/fckdata/file/85329734897.pdfIn PDF document text
    • https://camping-du-lac-dijon.com/fichiers/57599486054.pdfIn PDF document text
    • http://pronobile.de/catalog/file/movopogixuralozuno.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d033.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD033 17388 bytes
SHA-256: 39cbe5dd20f0000fcf24882bc9eb6f88585c8a0d19939b8d136feaff9e806380
font_01_sfnt_off0000fc2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC2C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011443.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11443 10844 bytes
SHA-256: f1bef021228b6e833f7d1d315a0bc45a396c4172a6c04ddb742d45f34e1ef040

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