Malicious PDF — malware analysis report

Static analysis result for SHA-256 7de02a12374b99f2…

MALICIOUS

PDF

78.1 KB Created: 2021-09-01 11:05:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 1af77d18617b3b46f27b2f1a30131098 SHA-1: 0ba98bfdc07f13d3be71f8cbe1998c6e2e352000 SHA-256: 7de02a12374b99f238b8536439f2494f0fe0395423ee62d2c84ba82e965a3cf4
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external URIs and link farms hosted on potentially compromised or disposable domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the structure and URL patterns are consistent with a malicious PDF designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://inwebjor.ru/uplcv?utm_term=univision+channel+on+fios PDF link annotation
    • http://kubak-ubezpieczenia.pl/userfiles/file/71158110028.pdfIn PDF document text
    • https://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/bc94e76759505b53d230bb4b589243c5/42395886778.pdfIn PDF document text
    • https://bamor.org/userfiles/file/nimizi.pdfIn PDF document text
    • http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609957fb9eb9f---fobiligelokopunarules.pdfIn PDF document text
    • http://baikalspring.ru/ckfinder/userfiles/files/60860567508.pdfIn PDF document text
    • http://zonweringbelgie.com/ckfinder/userfiles/files/8843963396.pdfIn PDF document text
    • http://garderoba.sk/images/_file/73534207256.pdfIn PDF document text
    • https://roadtoring.com/wp-content/plugins/super-forms/uploads/php/files/96b8484e6631229bed5d77953ffdf877/92117397493.pdfIn PDF document text
    • http://azseal.net/uploads/userfiles/file/48317062310.pdfIn PDF document text
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2f49b1eab6---10394174215.pdfIn PDF document text
    • https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/d56bb86def22f3f6dd123f0718582e36/30464679299.pdfIn PDF document text
    • http://project-lovcen.me/userfiles/file/betiz.pdfIn PDF document text
    • http://yaqeen-eg.com/userfiles/file/13653653431.pdfIn PDF document text
    • http://natpuedu.in/userfiles/file/58292290840.pdfIn PDF document text
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/d801f35fe05b06f56aa9460510dde4f0/fotumusedoten.pdfIn PDF document text
    • http://kenshopvn.com/uploads/files/wijevoneworazak.pdfIn PDF document text
    • https://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/9f45ba85354a4d28c305be4c22b73ca3/putixivezanobi.pdfIn PDF document text
    • http://wmhsclassof1977.com/clients/34196/File/gujujixironimofidekojakek.pdfIn PDF document text
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/1992dc276bfd7f2fff1c876fb5921e31/kumani.pdfIn PDF document text
    • https://www.kunapak.com/wp-content/plugins/super-forms/uploads/php/files/icqiuhsbc3ho33jh1gqfg8u8oo/muziwisopomi.pdfIn PDF document text
    • http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/161264f0ce7ae2---19535748103.pdfIn PDF document text
    • https://www.varishastalari.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608996f0be6fc---65713850598.pdfIn PDF document text
    • https://veaodaibrahma.com/uploads/image/files/34801569123.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/160895f140a833---13390523970.pdfIn PDF document text
    • http://sunnyten.net/userData/board/file/wodisukukasigisiku.pdfIn PDF document text
    • http://ophirtonhotel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16089f4b0e9507---sorapaxuludalisojutodoko.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_off0000cf52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF52 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e764.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE764 16928 bytes
SHA-256: eb79c80d5fe34e12bbab552b63957dfa66235d2767b850fecd94681ae768dc10
font_02_sfnt_off0001137a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1137A 10308 bytes
SHA-256: 654a293344220fc3bc6a8763c57870de4c1c802cc4834aacbf19c45734f72ac2

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