Malicious PDF — malware analysis report

Static analysis result for SHA-256 942ee3a5f6301a32…

MALICIOUS

PDF

78.6 KB Created: 2021-08-20 09:43:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 90beecfe344b44b756c03fbe9630b439 SHA-1: 58851bb75e8bb67a148cc2d881cdeafefd8ea0d9 SHA-256: 942ee3a5f6301a3287b83aa274967ad15094854adcf66149a9f31048b7a9b683
156 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are hosted on compromised or disposable domains, suggesting a link farm designed to lure users to malicious content. ClamAV and ML classifiers strongly indicate this PDF is a phishing trojan, likely exploiting a vulnerability to execute code or redirect the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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://lionkingbali.com/uploads/file/fefobi.pdf In PDF document text
    • http://wsp.pl/userfiles/file/kalipi.pdfIn PDF document text
    • https://j-kowalewski.pl/uploads/userfiles/files/68542861987.pdfIn PDF document text
    • http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c19d0adc096---surefevusekelegagulasun.pdfIn PDF document text
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/30de382df802f1c234eea54fe2585bcc/75341405974.pdfIn PDF document text
    • https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/5961e81b32d40e5eb8f04dc5d261f327/vezufitibonojusisuzutev.pdfIn PDF document text
    • https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/98d4ecbbb782cb6b0f2dd2dbe13d2c93/zeletojivow.pdfIn PDF document text
    • https://megatekspb.ru/sites/default/files/uploads/paxoladipejivoruxuvado.pdfIn PDF document text
    • http://ideatity.com/ckfinder/userfiles/files/zukaketixuxakepin.pdfIn PDF document text
    • http://www.ausafrica.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160beaad1bdc30---wakesivimeten.pdfIn PDF document text
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a03a5670692---84470635750.pdfIn PDF document text
    • https://catherinehourihan.art/wp-content/plugins/super-forms/uploads/php/files/e9cb00b54a099d8d11b4ddb205847766/fivit.pdfIn PDF document text
    • https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/1a35c92c5ec9417beb00ee66e2140d1c/69949992805.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160867130103c4---jidutuviburuwejax.pdfIn PDF document text
    • https://uniqrelation.com/userfiles/file/70629359349.pdfIn PDF document text
    • http://www.orhancoskun.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f82e0d7ff3---68278271473.pdfIn PDF document text
    • http://abogarestudio.com/userfiles/file/40033908592.pdfIn PDF document text
    • http://bellina.pl/userfiles/file/tavowomubov.pdfIn PDF document text
    • https://eghamatyab.com/basefile/bainbookcom/files/vikaropofesigupogubamu.pdfIn PDF document text
    • http://bjzjygj.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/xivazusiwo.pdfIn PDF document text
    • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/160e1836e100e0---nigesujikat.pdfIn PDF document text
    • https://natatourism.com/userfiles/files/zujinepazazibumem.pdfIn PDF document text
    • https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c3aab0582e---zeruwazijiwopukoxez.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=fundamentals+of+electric+circuits+5th+edition+solutions+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_off0000cd04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD04 16904 bytes
SHA-256: dc4e716ee45b7f68f29fa16671be982f9fec286d524ad10481f2b5d3f9cda768
font_01_sfnt_off0000f926.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF926 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001113d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1113D 11096 bytes
SHA-256: 436e06d1127ba930a3fba65ef8d72dcd2ec03f5f623fdf79c8499e0691a33161

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