Malicious PDF — malware analysis report

Static analysis result for SHA-256 69acf74126000bcf…

MALICIOUS

PDF

86.3 KB Created: 2021-07-03 19:31:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9a1565fe28c4b2b696e8baad8a2036e2 SHA-1: 44c51d67a8e372b18982bf3a584909a5376b3447 SHA-256: 69acf74126000bcf9503946ae6bba0e48ad7e57860a4a16bbee5d4bb40f8e789
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to compromised WordPress sites, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution through these links. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9819

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://irlanc.ru/uplcv?utm_term=cunnalinguist+what+does+it+mean
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e66bc07a1a---divopimexodomexoxoke.pdf
    • http://abwmountvernon.com/uploads/files/26519747941.pdf
    • https://seataclightingalaska.com/wp-content/plugins/super-forms/uploads/php/files/dad4eefdc4b63bb7429258f4b34f995e/42023238191.pdf
    • https://autosaloncenter.com/uploads/file/rekulo.pdf
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/31f322da01ed34517de61fd13e7060cc/66648711398.pdf
    • http://alsumiri.net/wp-content/plugins/super-forms/uploads/php/files/0a93b6b3893157d7a9ad7e4d33b8cbf5/12030316704.pdf
    • https://rebel-guitars.com/wp-content/plugins/super-forms/uploads/php/files/0f11cc840b3dd683fd0c390f84ee2860/gaxibukatebavawovejokip.pdf
    • https://www.techsrollout.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f78b0c789f---30345185900.pdf
    • https://www.themeshcowork.com/wp-content/plugins/super-forms/uploads/php/files/1df387a9ddfdcc40a8d7141368e4b9b1/rupekomewoporenina.pdf
    • http://smflow.in/admin/uploads/file/ridetaluwunepexinosa.pdf
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/14k7brgn4qnc0ifq5erel0p2d0/42608730893.pdf
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a20242b37c7---70690617178.pdf
    • http://messtores.ca/fck_user_files/file/zutexezorarut.pdf
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160bb8790a1812---55325741320.pdf
    • http://aj-logistics.com/stock/userfiles/file/pebipoxojanumurebat.pdf
    • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/c757e6c17f15bda932762a076062c46d/34938568571.pdf
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160b2b8bf4b024---gorute.pdf
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/i4b9fj7v6g3171ghcf39154ti6/nitexojinuj.pdf
    • https://regeneracion-capilar.com/wp-content/plugins/super-forms/uploads/php/files/370374466673574619d6b6e949e552b6/14898190223.pdf
    • https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a501484bc09---biwamafofikov.pdf
    • https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1bd460c418---6208049166.pdf
    • http://www.nowsingapore.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/1607b9376b71b3---tivutozoxure.pdf
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d5af5a9496---691461149.pdf
    • http://xn--9d0b102a6wc3y4a.com/sa_upload/userfiles/file/20210608015828.pdf
    • http://kennedy-jackson.com/clients/f/f7/f78508644b517540cdb1549d93860f53/File/25125718908.pdf
    • http://creptiles.dk/userfiles/file/gozigowubejeginapawofi.pdf
    • https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/229683227848c7014b39822fbcd3dd79/3215288886.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ece9.bin
6669e9accbbda8e2a85c9cc33195f3c216a0bddcf50183ce4e017f03c324f637		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECE9 17172 bytes
font_01_sfnt_off00011962.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11962 16792 bytes
font_02_sfnt_off00013179.bin
47d91f3de7aed9397b314abe16582e30dff59db2d71c0018be8e5e9319c6cff0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13179 10812 bytes

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