Malicious PDF — malware analysis report

Static analysis result for SHA-256 60eaed3b647ea449…

MALICIOUS

PDF

89.8 KB Created: 2021-07-07 11:00:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 9841d22b582e1badaaa90eeed4a46440 SHA-1: 4b19d49a749009f3b6ae7b10d77c3acab8d66b5d SHA-256: 60eaed3b647ea449fe171ff80d69f9d1beed9c7f62294eeebb1d7ab6f003492e
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The file contains numerous links, many pointing to compromised WordPress upload directories, suggesting it functions as a link farm to distribute malicious content or phish users. The presence of these links and the overall structure indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/196d66d16cd83cf6db285f1961a3b73a/21726315763.pdf In PDF document text
    • https://segurosjdd.com/wp-content/plugins/super-forms/uploads/php/files/1ce6vg4pbci8f58r776hst34b2/15475681178.pdfIn PDF document text
    • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/26db150b89819c71da6a53ef3e2e8174/nagijekiwuz.pdfIn PDF document text
    • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a0bf82b68db---71348866046.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/7cnjuj6dnb9eu3sjh03n1lpvh1/95701238333.pdfIn PDF document text
    • https://moma-restaurant.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086ee5a68565---namutumewajomalefej.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160d5007b333a7---dijepomusukutipofatutidi.pdfIn PDF document text
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606f0d33285df---51428977332.pdfIn PDF document text
    • http://susanirvine.com/clients/82887/File/nuloxedotofujixezakunek.pdfIn PDF document text
    • https://razvozka24.ru/wp-content/plugins/super-forms/uploads/php/files/7d717217ca94ce354aff4659251bde68/linuliwet.pdfIn PDF document text
    • http://lakes77.com/clients/47041/File/fuwupemejod.pdfIn PDF document text
    • http://dimexautomarket.sk/ckfinder/userfiles/files/fubavatesaditi.pdfIn PDF document text
    • http://pogservice.ru/userfiles/file/4003918247.pdfIn PDF document text
    • http://kiavysocina.cz/UserFiles/File/2569716435.pdfIn PDF document text
    • http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/8fbe00bfdb54240d7f4c5559214a80f0/96467543060.pdfIn PDF document text
    • https://wendi101.com/userfiles/file/79380154249.pdfIn PDF document text
    • http://historia-bfured.hu/userfiles/file/netedurukapax.pdfIn PDF document text
    • http://ciaooo.ru/uploades/userfiles/file/86193638139.pdfIn PDF document text
    • https://dacinsara.ro/fckfiles/file/66378074902.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/27qa21h8c4f7n6vieebraasmi1/fedananuziguxozoru.pdfIn PDF document text
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c2602eac1bf---lapulozenigi.pdfIn PDF document text
    • http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160748e420bbaa---zidoniw.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=question+and+answer+of+heredity+and+evolutionPDF link annotation
    • https://lapdonline.org/file/ropebezutazuzon.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_off0000f9f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9F1 10876 bytes
SHA-256: 468e252c36ed3e0b039fccb65ea0e0224f30a4741e893f4c8cb8922a586292f9
font_01_sfnt_off00011332.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11332 17052 bytes
SHA-256: 0d2dafb51800fe04237de6c15ec17a6a9295bf69ae5f98895a19d72e49b35914
font_02_sfnt_off00013fdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FDC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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