Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e899eb618bede26…

MALICIOUS

PDF

87.0 KB Created: 2021-08-04 16:13:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-27
MD5: fe185749b83c7d609c366aa2e7ba36b0 SHA-1: bb953172bb8a1d27afac2e5f32798b9e8306e7e2 SHA-256: 0e899eb618bede267258c8870b03388633d0bb61ec3b34e9b3d7fcaeb4ec45fe
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to direct users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the structure and URL patterns are consistent with a malicious PDF dropper.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://chcial.ru/uplcv?utm_term=what+is+the+theme+of+if+we+must+die PDF link annotation
    • http://rajskiewakacje.pl/userfiles/file/83082061867.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/4fda5574e2440970d8290b212deae129/72759741593.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082f0d5eec9d---suvilavazijimepete.pdfIn PDF document text
    • http://www.anjhimayath.com/upload/file/lagoreguzuzinivamegava.pdfIn PDF document text
    • http://mini-garden.ru/userfiles/file/pukonomigevoxidemasitabez.pdfIn PDF document text
    • https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ec41d97b76c---89303532891.pdfIn PDF document text
    • http://aucoindeshalles.fr/menu/file/61648595760.pdfIn PDF document text
    • http://habitat3.eu/userfiles/files/61109614708.pdfIn PDF document text
    • http://yaqeen-eg.com/userfiles/file/susomusafu.pdfIn PDF document text
    • https://intervalhousehamilton.org/ckfinder/userfiles/files/51682953842.pdfIn PDF document text
    • http://carsongrad75.com/clients/3/35/35717660c32d3dd9b0ffde8f33a19d23/File/nipejefav.pdfIn PDF document text
    • http://3xlove.com/uploadfile/file/21651136031.pdfIn PDF document text
    • https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/dbfebee3afce87fd3323544c5387eb1f/96102850564.pdfIn PDF document text
    • http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160c158c74a363---58381553804.pdfIn PDF document text
    • https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/05e22838f17fd90b8d38efd5fecf6ab6/nedeguwirikuxuxesuzibep.pdfIn PDF document text
    • http://americanewbie.com/userfiles/file/90924042943.pdfIn PDF document text
    • http://metaglas.kr/userData/board/file/tozilutekutawejimosorofip.pdfIn PDF document text
    • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c964e9d8229---lorilufolobidi.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a92631b2a91---42120660571.pdfIn PDF document text
    • https://mobilieroccasion.fr/uploads/file/ralawizofet.pdfIn PDF document text
    • http://mfcwestenkwartier.nl/beta/userfiles/file/xonusapajupewigu.pdfIn PDF document text
    • http://www.cafeinca.com/img/public/contenido/file/82118453950.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_off0000f079.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF079 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010890.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10890 10548 bytes
SHA-256: b6efc693e2e22dbe92e3fa389e7ca76264ef43606eacc3b4b5a5bcc47461f0d0
font_02_sfnt_off000120b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120B2 17352 bytes
SHA-256: 3abc072afb00f5a14701ae18a801ae8f26fa52c00a5f1468629e7131afb4a581

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