Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d0700cc9edb8c82…

MALICIOUS

PDF

81.2 KB Created: 2021-09-05 03:46:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: e20cb11c1fedf474326c42f463bacedf SHA-1: 899627e4de13ca705da36613c5de40b46e9b804e SHA-256: 2d0700cc9edb8c827ac14ea0b79c2955b16d3b8c3e0069d95865da95ea1e517e
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links to external websites, many hosted on compromised CMS uploads or disposable domains, suggesting a link farm or redirection mechanism. The document body is unreadable, but the presence of multiple external links indicates an attempt to direct the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/9422110b0e23eb92b786ae553b00f0e4/porojokafagogazolasebew.pdf In PDF document text
    • https://agermag.ro/mm/file/1986139900.pdfIn PDF document text
    • http://www.sudaff.com/pics/file/pezaneb.pdfIn PDF document text
    • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/lago0kqeuoi0k5914ckqa9qlc7/40616299059.pdfIn PDF document text
    • http://marklaliberte.com/fckupload/file/telavoxaxadigelodavo.pdfIn PDF document text
    • http://dokturmice.com/ckfinder/userfiles/files/94195319116.pdfIn PDF document text
    • http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099f0f3f34f1---bujuwidixazo.pdfIn PDF document text
    • http://bearings-home.com/userfiles/file/gijepawumekikosafusi.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a7c8123b9a---lifutegebubinu.pdfIn PDF document text
    • http://kimwendelldesign.com/ckfinder/userfiles/files/zexobo.pdfIn PDF document text
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607d831fcd59a---wumoda.pdfIn PDF document text
    • http://buddhavehicle.com/userfiles/file/21084722112.pdfIn PDF document text
    • https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/ccb47dd5935e8924445a75015712feb0/wigugajig.pdfIn PDF document text
    • http://portalinmobiliario24.com/uploades/fckeditorfile/29425830935.pdfIn PDF document text
    • http://agataklimowska.pl/userfiles/file/98724460830.pdfIn PDF document text
    • https://doktor-ara.com/userfiles/files/79448372160.pdfIn PDF document text
    • http://cgl.lu/userfiles/files/54494605916.pdfIn PDF document text
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa5f8de84b9---35481292936.pdfIn PDF document text
    • http://magicdiscoradio.hu/userfiles/file/fudanagijuk.pdfIn PDF document text
    • https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/74df09edaa07254e19a46df946241763/gutuwajuf.pdfIn PDF document text
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/62be1fb1beed17a93b31e6a5a5ae485c/rajelorozige.pdfIn PDF document text
    • http://elonsummerstorage.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087f077b52db---xofarajugeza.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb65c38c671---mazivevuforisu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=awg+to+mm+conversion+table+pdfPDF link annotation
    • 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_off0000d6a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6A4 11236 bytes
SHA-256: d2caf09a73a4818236cd3c916ca4d4d41427ad8924be13b9e2ee6445fc5b1e87
font_01_sfnt_off0000f09d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF09D 17880 bytes
SHA-256: d60feacf075de7e02778e87884382fe73c320f6ba577c79f63b6d6576aa18c74
font_02_sfnt_off00011f2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F2E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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