Malicious PDF — malware analysis report

Static analysis result for SHA-256 7407ace0934d2c1f…

MALICIOUS

PDF

74.7 KB Created: 2021-09-19 01:31:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 3469236ed723f211f91504bb95917608 SHA-1: ecbb5b058a190b79513f5996e6ae86a7e3dab3ea SHA-256: 7407ace0934d2c1f71a0265eaed9a39cb1f570459c01d0143cb199fe158c1ad1
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs, many of which are hosted on compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and the presence of 'utm_term' parameters in URLs indicate a phishing or credential harvesting attempt, likely related to password reset lures. ClamAV detection further confirms its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9934

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://wastran.ru/uplcv?utm_term=i+forgot+my+password+to+my+icloud+email PDF link annotation
    • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/161307319f1efb---jufupawirizatunazobet.pdfIn PDF document text
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/b8d09d20732a8502d83015340a27d50d/zulatepepif.pdfIn PDF document text
    • https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/29238d028159c8688617efeaca9840a2/75004490441.pdfIn PDF document text
    • http://kayapaliinsaat.net/file/newel.pdfIn PDF document text
    • http://xn--66-6kc8bfmkmjd.xn--p1ai/admin/ckfinder/userfiles/files/bijetorexatilefig.pdfIn PDF document text
    • http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613d9cad2273c---muzubabexeti.pdfIn PDF document text
    • http://hydrem.ru/images/file/raxejasozotexigusonolepa.pdfIn PDF document text
    • http://eatatrudy.com/uploads/files/76179425919.pdfIn PDF document text
    • http://fsgzb.com/upfolder/e/files/20210913144917.pdfIn PDF document text
    • http://bbmeti.it/userfiles/files/suvedijewuwozilel.pdfIn PDF document text
    • http://www.gdchgs.com/admin/img/files/tasapegokonuxarugufa.pdfIn PDF document text
    • http://househouse.it/userfiles/files/37217357888.pdfIn PDF document text
    • http://younewstoday.com/task/userimages/file/93445217437.pdfIn PDF document text
    • http://creativetechno.in/userfiles/file/pamemo.pdfIn PDF document text
    • https://texasbordervolunteers.org/userfiles/file/82131494937.pdfIn PDF document text
    • http://minhledtran.com/luutru/files/rateve.pdfIn PDF document text
    • https://rm-parketi.si/uploads/41702653028.pdfIn PDF document text
    • http://alarm.pl/userfiles/file/23367621999.pdfIn PDF document text
    • https://rcvizovice.cz/ckfinder/userfiles/files/61151333471.pdfIn PDF document text
    • https://safewatersolutions.in/ckfinder/userfiles/files/1624685448.pdfIn PDF document text
    • http://bluekeydigital.com/images/pic/file/61575459152.pdfIn PDF document text
    • http://monteconsultants.com/image/upload/File/79797313718.pdfIn PDF document text
    • https://mallorcaboom.com/res/wysiwyg/file/kuzoxitivusutugaw.pdfIn PDF document text
    • http://rockbond-aac.com/id-admin/fckImages/file/95173384703.pdfIn PDF document text
    • http://barefoot.pl/userfiles/file/dipimafavemi.pdfIn PDF document text
    • https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/c36i0ak400814c4n7qehi46n5u/58622160373.pdfIn PDF document text
    • http://anhuishangbiao.com/upload_fck/file/2021-9-15/20210915182812305119.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_off0000bf9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF9C 16644 bytes
SHA-256: de5758a3053ebe0a61218db79877394f239e43968787396fc2e4fab9db1dbc26
font_01_sfnt_off0000eaa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA6 11112 bytes
SHA-256: 668a2affbbd8f62e90a2739fa24bc543ba794482de7a1c195b320cadd083d79c
font_02_sfnt_off00010489.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10489 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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