Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d67b525cbf43e46…

MALICIOUS

PDF

114.7 KB Created: 2021-06-28 22:07:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1d83f2d9ccdb49cb461ec977a9386598 SHA-1: fb87a69d29bc189e4c6cece26a35b0b3fba9e4aa SHA-256: 2d67b525cbf43e4628fdecc8fdee590c58e66402c1e3078f303d065cfcb2bb28
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It functions as a link farm, containing numerous URLs pointing to compromised WordPress upload directories and other disposable hosting sites. These links likely lead to phishing pages or further malware downloads, indicating a malicious intent to lure users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9877

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://drafthe.ru/uplcv?utm_term=juridical+entity+meaning
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607516c3bcd0d---raxofovejevivo.pdf
    • http://xedaptap.net/userfiles/file/rejudodagodudanipijiduj.pdf
    • http://basyapiemlak.com/yukleme_klasoru/userfiles/file/12399572048.pdf
    • https://master.plus/wp-content/plugins/super-forms/uploads/php/files/97b160803e98c98cdd86d47428e3eab8/4390495963.pdf
    • http://aite-materials.com/upfiles/file/65226892183.pdf
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160a303d23ded7---55333187025.pdf
    • http://csc021.com/userfiles/file/20210625000252_s8gzxo.pdf
    • https://saraelv.no/wp-content/plugins/formcraft/file-upload/server/content/files/160d2ea7311ada---tufedewi.pdf
    • http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a096dd0ecb5---tudupoponud.pdf
    • https://rittenhousesmiles.com/wp-content/plugins/super-forms/uploads/php/files/562426641ca6f7f7f39f45c21b8eaa2b/88604671201.pdf
    • http://ekolojikweb.net/upld/userfiles/file/xowidixu.pdf
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/c4528aaf226c18f3ac77cac88182a107/55093941503.pdf
    • https://deconkhoemanh.com/wp-content/plugins/super-forms/uploads/php/files/g9gl2551pc4b7sjl64euoqp1ai/2118572363.pdf
    • https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/275deedff0aacbe24b40de421858a645/jikupomofejofefipige.pdf
    • https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/uvtm6eoeb2v2b537e30ck24hq5/21817923340.pdf
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097fbc0cc011---344616061.pdf
    • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4408ab0a63---xevowurevule.pdf
    • https://bajrahrs.com/userfiles/file/73376648815.pdf
    • https://www.beadvised.co.uk/wp-content/plugins/super-forms/uploads/php/files/6837989442d61818ae9c05cc8f1865d8/podezesoriromabuxaliluz.pdf
    • https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/1608f540d5b791---33334082603.pdf
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a0896cac410---jolebajamap.pdf
    • http://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a9d84b1e690---69650039983.pdf
    • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098f5056ef8b---14347877641.pdf
    • http://easternsheep.by/app/upload/file/dazebikelixubosugoroz.pdf
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/16078071e18a8d---lulutifuz.pdf
    • https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/fec94961f2c239aa624ecd80db0a8e06/dakotogazena.pdf
    • http://alexhofford.com/temp/files/file/mojekijufev.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_off00016018.bin
2a0f4dfb7d8f9dc19e0e61f52e8208c9b32b682d5ca3ec56f6122d3067c53c54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16018 10632 bytes
font_01_sfnt_off0001782f.bin
59829ab301088396d76e34f4a7ef4f2b089fce97e296510b1ccdcc547a8ac43c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1782F 17676 bytes
font_02_sfnt_off0001a541.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A541 16792 bytes

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