Malicious PDF — malware analysis report

Static analysis result for SHA-256 32f2e68cbffbdf1d…

MALICIOUS

PDF

94.5 KB Created: 2021-06-29 22:07:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: f0f64de1f9e577cf4ca2611ec38c03e7 SHA-1: d3677c271aec7f1da162a4f535ad50fb10345bc0 SHA-256: 32f2e68cbffbdf1dcab940522f0cd733b699b02b84cc64f6c11027da526f9a47
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a link farm with numerous URLs pointing to compromised WordPress sites and potentially malicious content, suggesting it's designed to redirect users to harmful destinations. The presence of external URIs and a raw IP address in the document further supports this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

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 http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d472349c3b---ravowibakipobolibaresuve.pdf In PDF document text
    • http://iccj.jp/images/uploads/fckeditor/file/ruzexujitaw.pdfIn PDF document text
    • https://gtselect.fr/ckfinder/userfiles/files/64355764158.pdfIn PDF document text
    • http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ab4784578d8---17889427204.pdfIn PDF document text
    • http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/1607e26a418063---76697016722.pdfIn PDF document text
    • https://www.sixteengrams.com/wp-content/plugins/super-forms/uploads/php/files/tq6gvuu20amud2e5apcmqflpem/sifofejenaxoz.pdfIn PDF document text
    • http://wecans.net/_UploadFile/Images/file/19893988886.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160851802b55dd---xegexejuli.pdfIn PDF document text
    • https://biblioteka-koneck.pl/ckfinder/userfiles/files/ratirojidiwozoziwabimamam.pdfIn PDF document text
    • https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16091dc947ade6---85283909650.pdfIn PDF document text
    • https://badrivishal.com/media/repiwagilafezemopa.pdfIn PDF document text
    • http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/ocfepetsvo926vp48k1u3f6v24/14897585704.pdfIn PDF document text
    • http://xn--or3bi2da319p.com/upload/fckeditor/file/bipapawunatibegolojave.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/160a2d3e620abc---42506124547.pdfPDF link annotation
    • http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/j77nogktldd7vcmcc65d3ot2pv/dakisaredovavewilo.pdfIn PDF document text
    • http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a81c60f0cf0---bibofurozamekosagas.pdfIn PDF document text
    • http://sequirk.ie/userfiles/file/buvatigulujepepiligebukeg.pdfIn PDF document text
    • https://beaufortbond.com/wp-content/plugins/super-forms/uploads/php/files/85f2c012bf960489aa0e5ec00a36d9ad/97420421166.pdfIn PDF document text
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607200ed760f3---gunuziwemadamuva.pdfIn PDF document text
    • http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/f86e8960c9d73181a0fc5e83739d059b/fikasubimemubavasobuv.pdfIn PDF document text
    • https://beaumont-residence.com/wp-content/plugins/super-forms/uploads/php/files/gbjhkh912b0rhug44511ei1k7f/dulopupuragoxipubir.pdfIn PDF document text
    • http://ndt-tl.ru/upload/file/50924924674.pdfIn PDF document text
    • https://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/4ncgkvf3ua2msu50mufjfs1464/15048752893.pdfIn PDF document text
    • http://smartpaintingplus.com/userfiles/files/mozagokab.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=guy+montag+quotes+with+page+numbersPDF 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_off00010b7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B7C 11280 bytes
SHA-256: b220fd74baca60355117609b3e4b02d1d18f941c6c71493ab43f52036b23397d
font_01_sfnt_off0001255c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1255C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013d6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D6E 17932 bytes
SHA-256: d4fd698de2be473c9885aafee238600257eb86a0f4cd0266ebfa3238f6fe2705

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