Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ce0babd8ea0ace3…

MALICIOUS

PDF

85.6 KB Created: 2021-06-29 23:49:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1da8b376aead942826905feca3f8229b SHA-1: c7752ac3fe67ee34bbc0e52169b58366db686794 SHA-256: 0ce0babd8ea0ace3a21d5f2c49ea3cd81b8fa20e032a78bddda7061e3f5fd89c
156 Risk Score

Malware Insights

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

The PDF contains a large number of links, many pointing to compromised CMS uploads and disposable hosting, indicating a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery via these external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9849

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://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/840396053dab56cded3f46e9d57a3a1d/50320473054.pdf
    • http://animationcoach.com/userfiles/file/78602044470.pdf
    • https://asset-books.com/userfiles/file/94798241086.pdf
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8d1fd7d38b---lokemix.pdf
    • https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/c8hnrv91g0ukd2ff8vk9ehbjvr/55952504694.pdf
    • https://hartwellcook.com/wp-content/plugins/super-forms/uploads/php/files/287feeffb26a9ee160a18955a45c8238/tadaruxej.pdf
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/160860ae47730e---gajivivalu.pdf
    • http://aire-limpio.com/img/editor/file/posoxipe.pdf
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/160774ddb13fd7---14631537880.pdf
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8b82f45faf---verakiduzo.pdf
    • https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/n7urd9ci903paj9g77uhos1bds/65892291412.pdf
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607495115a074---turokilovadelibivi.pdf
    • https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/b64b3p306f9ib69t9kb111qiv1/sabagitudopugig.pdf
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160768a1bc700b---fimiv.pdf
    • http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16084eb61ecc0d---29723947745.pdf
    • https://www.nobleorthodontic.com/wp-content/plugins/super-forms/uploads/php/files/f90c6c77f169bab3183f4056696bccfc/gufiluvafupijokiwez.pdf
    • https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/fbde260838ec1a214c452caa40e8015b/zinawidasadawanofijorujew.pdf
    • http://dchs1961.com/clients/871949/File/9602679399.pdf
    • https://fnb-concepts.com/images/uploads/files/liwebipifofogusiwezir.pdf
    • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/15562ed44d799f3d2df2fe4af662fa63/94321756777.pdf
    • https://sgdivorcelawyers.com/wp-content/plugins/super-forms/uploads/php/files/828b559d9892e96108ad93f37345625a/wiremamaligewuj.pdf
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/1606f9578e5b1f---vazowijorobopedulirina.pdf
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/160720803d3de7---13985753169.pdf
    • https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/246419eb7255d0d86b5fca746257eb05/xusasobanak.pdf
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/16082465c01c62---wezur.pdf
    • http://oodow.cn/upload/file/210610191838368666l29n815g16e6.pdf
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/7lh9kq5p60m8k1asgnjqjlnq61/wanodapa.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=class+5+science+worksheets
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb21.bin
bb18cb1c8038c8d2517273fe962b0508e2016f161c00f7a0781a8500c715dbdf
pdf-font-stream PDF embedded font (sfnt) at offset 0xEB21 17292 bytes
font_01_sfnt_off00011825.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11825 16792 bytes
font_02_sfnt_off0001303c.bin
72d58be1515990427cac6d63fcde689eaffdb8a907373a69b5d6711de17fc7ce
pdf-font-stream PDF embedded font (sfnt) at offset 0x1303C 10668 bytes