Malicious PDF — malware analysis report

Static analysis result for SHA-256 06efe314359a910e…

MALICIOUS

PDF

78.8 KB Created: 2021-09-02 00:08:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 71a1627c91afb0a57fa1fd8a58b9f14c SHA-1: 237c8791f6a7fb280e19b74a10d549b2d40561f7 SHA-256: 06efe314359a910e21d0307e2e7624c48bebef2d1a5a4ae335bb4050b718b924
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9958

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://wastran.ru/uplcv?utm_term=excessive+salivation+in+dogs PDF link annotation
    • https://abofahed.com/userfiles/file/97565931458.pdfIn PDF document text
    • http://mwflower.com/upimagesfile///dapimovutuj.pdfIn PDF document text
    • http://clubesquilacoma.com/uploads/files/xujuwida.pdfIn PDF document text
    • https://lea-inc.com/wp-content/plugins/super-forms/uploads/php/files/b78f5b205b074c76d2a9b1c6c3b64583/vewanoresof.pdfIn PDF document text
    • http://projectbudapest.hu/wp-content/plugins/formcraft/file-upload/server/content/files/16092241aa8cc3---pofasedisoluludotidofewe.pdfIn PDF document text
    • http://sequoia60.com/clients/875776/File/sufikemofewofu.pdfIn PDF document text
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160997128cd865---61199083323.pdfIn PDF document text
    • http://dachastyle.com/userfiles/file/fimupagonutanik.pdfIn PDF document text
    • http://basyapiemlak.com/yukleme_klasoru/userfiles/file/87755714423.pdfIn PDF document text
    • http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/87d6b00f2902baf4dae64c9aba8a0f6f/62031611882.pdfIn PDF document text
    • https://myshalewell.com/userfiles/file/regemu.pdfIn PDF document text
    • http://adaviestransportltd.com/userfiles/file/fogugilug.pdfIn PDF document text
    • http://lagostena.it/userfiles/files/99668891039.pdfIn PDF document text
    • http://bptramptour.pl/files/file/8316109113.pdfIn PDF document text
    • http://exosportsante.fr/ckfinder/userfiles/files/90642199195.pdfIn PDF document text
    • https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a357c950904---nenadam.pdfIn PDF document text
    • https://www.beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/c838236a5ead67aab974604150cd2101/38719650810.pdfIn PDF document text
    • http://scvumaichiramen.com/uploads/files/40622970864.pdfIn PDF document text
    • http://isisthailand.org/file_media/file_image/file/90458916338.pdfIn PDF document text
    • http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16073db5953922---xerowinasovorifadugaripu.pdfIn PDF document text
    • http://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8fa2dd03f---ziwixuzojobafivojubipiz.pdfIn PDF document text
    • https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a187508543---mododamazimuvur.pdfIn PDF document text
    • http://zonweringbelgie.eu/ckfinder/userfiles/files/26242289138.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d38a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD38A 16564 bytes
SHA-256: e495021365701d224d149d682c0a6fd553d916ed136d47ac558b094956ab892d
font_01_sfnt_off0000fe18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE18 10596 bytes
SHA-256: 80dbdb9f9e13000f378c362f3eb89dd4e83dabb9683492e5ef57c6a326d8972d
font_02_sfnt_off00011647.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11647 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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