Malicious PDF — malware analysis report

Static analysis result for SHA-256 37d34d00c95794fc…

MALICIOUS

PDF

93.8 KB Created: 2021-06-26 00:56:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f33a9ff17d77949ae636a3162a5c901c SHA-1: b9108535e62552d940985d73dc6f589d6cf1c37b SHA-256: 37d34d00c95794fc680d7177ba3aabbb68865e843c222c8509bd9a0a68c3e007
156 Risk Score

Malware Insights

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

This PDF document contains a large number of links, many pointing to compromised WordPress sites, suggesting it is designed to lead users to malicious content or phishing pages. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9786

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://garglob.ru/uplcv?utm_term=figural+analogy+questions
    • http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/b5112b20fdbe4c8f6be778437f5caef6/tisaliruzaxafidupuwidor.pdf
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c01f9e633c1---vefumor.pdf
    • http://allasclub.com/campannas/file/rixisijatifobi.pdf
    • https://airbays.com/userfiles/file/lukaz.pdf
    • http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071acc8e2cc6---moxuliwivos.pdf
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607a555cf26da---42470737822.pdf
    • http://xn----8sbnbd9chja.xn--p1ai/userfiles/file/94103019966.pdf
    • http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/e922cec04f7f410f3e2e14b7efd88e98/9566761908.pdf
    • https://www.adcgrain.com/wp-content/plugins/super-forms/uploads/php/files/9507df02b07b4341380156b57ac1fcdd/kizilokijomasoposile.pdf
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a7f34912483---xalikozit.pdf
    • https://www.infrascale.com/wp-content/plugins/super-forms/uploads/php/files/9d1386054d4257b194a8dc667673a299/kagodonisidutibuzigavesuj.pdf
    • http://projectbudapest.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1606f1700c26f0---24956107507.pdf
    • https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/65b26e1b2b728d4789ce04694be959d6/dilazolomamitux.pdf
    • https://laflammerouge.ch/userfiles/files/83885354229.pdf
    • https://jahanchart.ir/data/files/file/8511016495.pdf
    • https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/tdvomfqui0v1lauk66kfq9t3nq/jimep.pdf
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160762a72f27bc---lotutarisetufilo.pdf
    • http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075b520a6433---wifitinulidoza.pdf
    • http://aven.su/userfiles/file/89067740525.pdf
    • http://accessiblevehicleservices.com/userfiles/file/70029508989.pdf
    • https://masukpt1.com/contents//files/bezejapokovuf.pdf
    • https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/919e13aca6322e4b3d80ad2aa7c105f1/26143518160.pdf
    • https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160849426b3e95---31874957633.pdf
    • http://wearefamilypalestine.com/clients/3/3b/3bc38fc23f9ffb54b20226cbd6ad6ce3/File/38048279889.pdf
    • https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609baefd4fa3d---94003460065.pdf
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/4fdfef69d684f2936547a8b3264010ab/favoradajuwogute.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f660.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF660 16792 bytes
font_01_sfnt_off00010e77.bin
a5a50cff4244f3d9f4070108d46e42de3a3e50055ae8f9f73dca38f6e88de791		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E77 10620 bytes
font_02_sfnt_off00012693.bin
2577882b574741824affc373637245cc68c8c58101a6b3930508755494da427e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12693 17364 bytes
font_03_sfnt_off0001540a.bin
fcca37035df06e555c2991ff65faa0e8497ca6423bee408ebc46b3aef925b516		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1540A 16144 bytes

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