Malicious PDF — malware analysis report

Static analysis result for SHA-256 083ca7fa44d26928…

MALICIOUS

PDF

87.4 KB Created: 2021-09-05 12:01:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 5b94ceee764b017c95f613a020f92bf4 SHA-1: 0f91c15a04147d1c2122bcf47406fe7ca4544e99 SHA-256: 083ca7fa44d26928c27bdbaba28391563ca7f9b280e6ed02ac286d1e2b96ce88
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a large number of external links, many pointing to compromised WordPress sites or disposable hosting. The primary lure appears to be a "Tesla owners manual not loading" message, directing users to external URLs. The embedded JavaScript likely facilitates the redirection or further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://crysiq.ru/uplcv?utm_term=tesla+owners+manual+not+loading PDF link annotation
    • http://files.ibiza-ferien.de/file/zaluxafetiwapepuzawip.pdfIn PDF document text
    • https://bodwellassociates.com/wp-content/plugins/super-forms/uploads/php/files/9c12e086ba01d82198869781b613f976/69839049580.pdfIn PDF document text
    • https://velvetskin.pl/wp-content/plugins/super-forms/uploads/php/files/0b17165614f3e1576cfbc52c877e20cf/108504023.pdfIn PDF document text
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b403435a79f---rejinat.pdfIn PDF document text
    • https://arhstroi.by/uploads/files/59584781091.pdfIn PDF document text
    • http://stonebreaker.at/gaxewunazojiveraf.pdfIn PDF document text
    • http://medtravel.pro/images/hand_uploaded/files/31513190498.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b1900c0683---1572429972.pdfIn PDF document text
    • http://renovfab-menuiserie.com/userfiles/file/97360493953.pdfIn PDF document text
    • http://interiorconsignments.com/media/file/luluvexafiv.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/160d5d55ba1270---vevodefikibuzujeduvatajiz.pdfIn PDF document text
    • http://gaongonmaiphuong.vn/webroot/img/files/kulovadawiwasadojeki.pdfIn PDF document text
    • http://lindseyderence.com/userfiles/files/13627665421.pdfIn PDF document text
    • http://radioevangilereal.com/assets/ckfinder/core/connector/php/uploads/files/1046053048.pdfIn PDF document text
    • http://schnauzermountainminiatures.com/clients/17729/File/sixubokezinosafokufere.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/r09cvi4n926qacll5nq4sh29q3/finikokeketezufagabi.pdfIn PDF document text
    • http://gorisum.net/fckeditor/upload_file/file/12987942314.pdfIn PDF document text
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ea0a9e440b---45519065549.pdfIn PDF document text
    • https://maconlux.lu/userfiles/files/48117364943.pdfIn PDF document text
    • https://zivotzaokny.eu/res/file/sezusa.pdfIn PDF document text
    • http://m-styleauto.com/js/upload/files/87773020241.pdfIn PDF document text
    • https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/bdbdc4a28c46c308f09db888bdf0a6b1/15601341966.pdfIn PDF document text
    • http://elskenecologie.nl/files/likexapiwexutevezud.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_off0000efdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFDB 18808 bytes
SHA-256: 029682aaaf670a048f941026b7c171c020b9a0dc818ef3ce24cddfaf8bf69205
font_01_sfnt_off00011fdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FDD 10740 bytes
SHA-256: e09e7907b634ab28a80636b30c3a57af75ff3482068263c8604e0e61725f2385
font_02_sfnt_off00013868.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13868 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1