Malicious PDF — malware analysis report

Static analysis result for SHA-256 4de10f3a946c914f…

MALICIOUS

PDF

119.5 KB Created: 2021-07-02 05:25:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 6a59eddd2cc12e873013c972df862150 SHA-1: 889497d506af58dfaf31140f16563a1403f49322 SHA-256: 4de10f3a946c914f7400456332dfa96d21f99b9af488c44c1c6db3d1ea0edf3b
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. Static analysis revealed multiple heuristics indicating it's a link farm hosted on compromised WordPress sites, with numerous distinct hosts and links. The embedded URLs, such as http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607031edb08f6---59671382960.pdf, are likely intended to redirect users to malicious or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9876

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://mziagroup.com/wp-content/plugins/super-forms/uploads/php/files/pph65gnu4vbqejdlbhro8uk201/gulirironejebufigekajoj.pdf
    • http://nomorecpapmachine.com/userfiles/files/34024282623.pdf
    • https://bevillelecomte.ovh/ckfinder/userfiles/files/gosivewuzerivutatu.pdf
    • http://fipjp.com/userfiles/file/sujotuzevipe.pdf
    • http://vds-construct.pl/userfiles/file/wavezipotip.pdf
    • https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/c4446d8afe6e2ad95cc8a4c69c1fd9dd/94557514328.pdf
    • https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/4gr0a7diarvsag1dlvlrkcor54/63138643395.pdf
    • https://thehamptonsbloomington.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f4b57586b7---fetavokuzigu.pdf
    • https://chris-arnold.com/userfiles/file/tibalav.pdf
    • https://campermagazine.tv/public/file/venezawesasasediwim.pdf
    • http://kassa.pl/userfiles/file/49866855077.pdf
    • http://enjoybowlramenandpoke.com/uploads/files/16560319741.pdf
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607031edb08f6---59671382960.pdf
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160781cbfb5d1b---45054599392.pdf
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607217ae342ae---55835053164.pdf
    • http://agataklimowska.pl/userfiles/file/16956563737.pdf
    • http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/160dc0f12bc76e---xewamogoripevov.pdf
    • http://digemnd.com/UserFiles/file/47724755852.pdf
    • https://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c2d2b8f1c89---pokonojurekonadodademuxud.pdf
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/eaf76082253877dea08cab583b036ebf/kixononozadawogozekez.pdf
    • http://shsalumniauditorium.org/clients/f/fa/fa32e32112b7cad64a7d7e78b95ed61b/File/15263515662.pdf
    • https://ceilford.org/wp-content/plugins/super-forms/uploads/php/files/e3c2897115056060f3f1c9364c50778e/92784718885.pdf
    • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c86dcc28a2---24855978086.pdf
    • https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/ae6c9414063f82f89dae3797927dedfc/66126098118.pdf
    • https://fibaquitaine.fr/cebatrama/userfiles/files/35326309821.pdf
    • https://happycustomerservice.com/wp-content/plugins/super-forms/uploads/php/files/e239aefdc28fa22921de18834ead79be/14307621494.pdf
    • https://www.elitelawnsolutions.co.uk/wp-content/plugins/super-forms/uploads/php/files/7u9c09ctqpq2fn8svrn4i1cb2m/54088401811.pdf
    • http://humanitool.ru/userfiles/file/kawogebudazasebikem.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=from+bit+to+byte
    • 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_off00016ccd.bin
adab27f32f2579858cff8140cc60296fcab2e461f37001060b269e52fe7b0be0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16CCD 19916 bytes
font_01_sfnt_off0001a077.bin
d46db755a47dc06e00ac8e08c4d05d8e8e7913c5d51d1f5809367cd7abc518dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A077 10020 bytes
font_02_sfnt_off0001b6be.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B6BE 16792 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.