Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1205dd189ded3ad…

MALICIOUS

PDF

80.4 KB Created: 2021-07-01 13:52:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 6a619e38ba70ab91a6c0ba6062384035 SHA-1: be29c9385eb8024d9cc08569645033627c02579b SHA-256: e1205dd189ded3ad4d8f6fc6991d58d418894900a4565d0fac3b2440c1dc4d15
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains a link farm pointing to multiple compromised WordPress sites and disposable hosting, suggesting an attempt to distribute malicious content or phish users. The presence of numerous external URIs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicate a deliberate effort to obscure the final malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9833

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://apoiotelecom.com/imagens/img_fckeditor/file/zelin.pdf
    • https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/938420bf55b1c81de7505091e3ec792a/39443436700.pdf
    • http://atya.eu/files/file/926123081.pdf
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/e273fcb3989b29ccdaff2143e8ceb187/vajaxabojeg.pdf
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/25cfcfc48e5c0f066a4d20514c4fa491/26073492706.pdf
    • http://soles2walk.cz/data/file/xudidakutonoresaw.pdf
    • https://roadtoring.com/wp-content/plugins/super-forms/uploads/php/files/054303c301d2b2ce77fde0f13a2cc98e/wegopetamikeluxuto.pdf
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/quhnuqpc0htl85kltchnad619r/60401075568.pdf
    • http://jatyn.cn/upfiles/202106/file/1624462208.pdf
    • http://lbhs1965.com/clients/6/6b/6bdd8f708684a1f547efbf97e1630fe5/File/suzenopov.pdf
    • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ac1cab9208b---71843895325.pdf
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/fa41316fd6b623f0162935afd051a295/fotezotuz.pdf
    • https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/bb3ef962ac712c68d1888f7083b57c40/19651291632.pdf
    • http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a433105b539---zonizavesuzefisubifokaz.pdf
    • https://fcr-fomentoconsumoerenda.com/uploads/files/42147296288.pdf
    • https://mmszke.hu/files/file/gexofutawalo.pdf
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9424e0cfd9---41090820247.pdf
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/4gl00bc2n95qqcurhns7alebgp/33895913660.pdf
    • http://didopack.com/files/luvifozuxilogizew.pdf
    • https://www.ptlittleflower.org/wp-content/plugins/super-forms/uploads/php/files/779pbi55jeheamsqqfg0j3g3va/71593813604.pdf
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16097a17f8de3d---42495132168.pdf
    • http://suachuabaoduongmaynenkhi.com/img_quanganh/files/88811596724.pdf
    • http://asustainable.com/global/file/12479634510.pdf
    • http://ufnk.fr/app/webroot/files/file/95999041503.pdf
    • http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607965e6dc456---libugodexalijetes.pdf
    • https://akproauto.com/nbloom/fckuploads/file/38300046057.pdf
    • http://brenna-ski.pl/userfiles/file/543946012.pdf
    • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b14954f608---wusubevirewagekitej.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=download+link+game+ppsspp
    • 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_off0000d80a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD80A 16792 bytes
font_01_sfnt_off0000f01c.bin
bba01b25d9e3fd76185958cc743613349c9387ce859f1e63b51cb69d09d8bd58		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF01C 16800 bytes
font_02_sfnt_off00011bf6.bin
549f8d4dc5d2935691e296558c7781aeaddc9f163144eda4174509a18603eb15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11BF6 10716 bytes

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