Malicious PDF — malware analysis report

Static analysis result for SHA-256 30e80bc7ce514edb…

MALICIOUS

PDF

84.3 KB Created: 2021-09-01 18:03:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: a4cda7c70f7a48f22807366289490a74 SHA-1: a2066ad496f67b74cba5fa98ba9f67c099a3310c SHA-256: 30e80bc7ce514edb04f72b79c7c90461afb4b45099651f66ecc185a627b99e6b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The file was detected by ClamAV as Pdf.Phishing.Trojan and an ML classifier flagged it with high confidence. Heuristics indicate the PDF contains a link farm pointing to compromised CMS upload storage and disposable hosting, suggesting a phishing or malware distribution lure. The document body is heavily obfuscated and unreadable, providing no further context.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/012ediidkf5oel3pci9ondfped/68607447572.pdf In PDF document text
    • http://mwflower.com/upimagesfile///49819205694.pdfIn PDF document text
    • http://uniradioweb.info/userfiles/files/36062818116.pdfIn PDF document text
    • http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160884092c77e0---55451497817.pdfIn PDF document text
    • https://www.m2asolutions.com/wp-content/plugins/super-forms/uploads/php/files/cff0c18d53a8acde0138f0fd42310da1/zopuja.pdfIn PDF document text
    • https://beaumont-residence.com/wp-content/plugins/super-forms/uploads/php/files/1i5g231b44vttfl807geml7o4j/guzudeguvuxu.pdfIn PDF document text
    • http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f1c76d022a---24583385522.pdfIn PDF document text
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c282f8a4b03---37063655651.pdfIn PDF document text
    • https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/ac1pf8v79vlc4v2htp2guv75fd/66247317887.pdfIn PDF document text
    • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/160d5116f3f36d---toguw.pdfIn PDF document text
    • http://www.cerathai.com/image/upload/File/xutaxorur.pdfIn PDF document text
    • http://dongzzang.com/userfiles/file///gutirexuwepapedomupuxa.pdfIn PDF document text
    • http://newgrids.com/userfiles/file/49323040992.pdfIn PDF document text
    • https://thietkewebseo.com/webroot/img/files/79248245344.pdfIn PDF document text
    • https://www.idromeccanicasrl.com/idromeccanicasrl.com/wp-content/plugins/super-forms/uploads/php/files/60f4db66a9fcd8299311ab7411587504/7092725192.pdfIn PDF document text
    • https://sananselmo.com/wysiwygfiles/file/57168496264.pdfIn PDF document text
    • http://inoxbienhoa.com/upload/files/40020286674.pdfIn PDF document text
    • https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/0msupb2ht8gtmhffc0b343cmq4/foxejidixesomekigenopiwa.pdfIn PDF document text
    • http://sparkpro.lv/content/file/70913127512.pdfIn PDF document text
    • https://rowadalbyt.com/userfiles/files/83178591588.pdfIn PDF document text
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/1612f7791aeef5---6924125792.pdfIn PDF document text
    • https://kingwaterpure.com/ckfinder/userfiles/files/pekut.pdfIn PDF document text
    • http://romanakladatelstvi.cz/userfiles/file/kojuzojewonixexidemesolel.pdfIn PDF document text
    • https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/hl9j8dnkascla70qa7534q065u/74029327864.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=npv+with+scrap+valuePDF 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_off0000e4fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4FB 10476 bytes
SHA-256: 5f4133c13d3edc940c00f527d740ec480d4facf31cb1d5d59b59f9f0e844d6f8
font_01_sfnt_off0000fd03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD03 17652 bytes
SHA-256: 3c79846b2b6296c819081ec26b6bd3625bfaac0bcb36c9f89b6d92f657440539
font_02_sfnt_off00012a8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A8D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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