Malicious PDF — malware analysis report

Static analysis result for SHA-256 22e1260bf568ebc0…

MALICIOUS

PDF

83.0 KB Created: 2021-09-06 16:09:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 1d6a9c4e387b54138a3d12549bac97b4 SHA-1: d0111e0647d3489ddb7ecd8849afc8a6260a0bb6 SHA-256: 22e1260bf568ebc0d9c36f9b3cb4db4f848a805c69f221aade97d3f2e4ec0a94
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URIs, many pointing to compromised WordPress upload storage or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate this PDF is likely used as a lure to download further payloads or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://nomylo.ru/uplcv?utm_term=blacksad+comic+pdf+espa%C3%B1ol PDF link annotation
    • https://mszukam.pl/dat//file/64104941286.pdfIn PDF document text
    • http://idcla.net/upload/files/35168900917.pdfIn PDF document text
    • https://www.demetagras.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608069a6db900---xofudaxelopafatelogejed.pdfIn PDF document text
    • http://andrelandberg.com/userfiles/file/30461357282.pdfIn PDF document text
    • https://selltoob.in/ci/userfiles/files/69142275923.pdfIn PDF document text
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16091cf7697962---pofegujup.pdfIn PDF document text
    • https://autotrilogy.com/wp-content/plugins/super-forms/uploads/php/files/ad8e870a307a7ce24703937e69c3628d/15929910330.pdfIn PDF document text
    • http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16114cb22e1655---64314002583.pdfIn PDF document text
    • http://klimagra.pl/images/wysiwyg_img/file/kapijaturejexiwuvak.pdfIn PDF document text
    • http://meteosputnik.ru/userfiles/file/17564854138.pdfIn PDF document text
    • https://koetec.com/home/~ptow/public_html/ckfinder/userfiles/files/dabizax.pdfIn PDF document text
    • http://vencedor.coop/images/admin/file/55064233224.pdfIn PDF document text
    • https://implant-drill.com/userfiles/file/jimesigoruwopuwifobawit.pdfIn PDF document text
    • http://mynigaoe.com/upload/file/20210510082754.pdfIn PDF document text
    • http://bsp-oblspl.org/ckfinder/userfiles/files/rilemuwo.pdfIn PDF document text
    • http://127.0.0.1/kardelenemlak/upload/files/69771290141.pdfPDF link annotation
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d9dc1449f19---60384073418.pdfIn PDF document text
    • https://airflow-skateboards.com/upload/file/692654927.pdfIn PDF document text
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160c153f0c1719---pulunikamir.pdfIn PDF document text
    • https://beribuket.ru/wp-content/plugins/super-forms/uploads/php/files/b53900d5addf89ca20b1aea338204494/24533454452.pdfIn PDF document text
    • http://suapaiatuipelehakefamily.com/clients/80707/File/jobazabajujegujorepojotin.pdfIn PDF document text
    • http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/bd1c67091bef1767222ed83ee3337922/tikexadijinevegipobuluw.pdfIn PDF document text
    • http://recruiters-zone.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072c95211922---93115126522.pdfIn PDF document text
    • http://silverk.ru/img/lib/file/23475434828.pdfIn PDF document text
    • https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/920ac6d9cfc5406bdc6f99c6c6290085/demanewavatofematekofepu.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_off0000db33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB33 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f34a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF34A 10832 bytes
SHA-256: 4f2ef5c953f71bf7ca1f60e87f63e07b33c48174ebc1e7c62def3302010db349
font_02_sfnt_off00010c3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C3E 18636 bytes
SHA-256: 9ee5dd69253eb5589ab447e8cd8b761cb7eed5b47fdb8ce6390664b7e90ba79d

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