Malicious PDF — malware analysis report

Static analysis result for SHA-256 94966d43d75cda52…

MALICIOUS

PDF

327.9 KB Created: 2021-12-26 22:06:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-11
MD5: 027c60825564627efadbb5138c3c27a4 SHA-1: 59be5f8f5a2f7359bcc1427ffb0ff540e117bcde SHA-256: 94966d43d75cda52dc316e7ee6f7f33657963e2ee8b5f5b2c9f019255bfbc5e6
266 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8408

Heuristics 9

  • 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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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.
  • 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://beibarys.com/app/webroot/js/kcfinder/upload/files/zanatuginizawobuwasewe.pdf In PDF document text
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/161694318b05f4---95284042878.pdfIn PDF document text
    • https://edusfera.pl/upload/file/49706792615.pdfIn PDF document text
    • http://loxocongnghiep.com/MINH/user_files/file/towawifuxibu.pdfIn PDF document text
    • http://pc75.net/upfiles/file/1640004856.pdfIn PDF document text
    • http://9meclinic.com/ckfinder/userfiles/files/28281332253.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614239e823fcb---20256379354.pdfIn PDF document text
    • https://hediyelikhanem.com/calisma2/files/uploads/79040786276.pdfIn PDF document text
    • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/f8comufmt64u4aqg4emriqrvf0/riludusumurij.pdfIn PDF document text
    • https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/b9b3dae8f85b0f5a92a73bcd575299e6/milaxamotudobivubog.pdfIn PDF document text
    • http://vitalbafitnessclub.eu/userfiles/files/tokenurewekaguzebulavoz.pdfIn PDF document text
    • http://vedepcuaem.com/luutru/files/9811581973.pdfIn PDF document text
    • https://tpijobportal.com/ckeditor/ckfinder/userfiles/files/26010500332.pdfIn PDF document text
    • https://atcotourismtravel.com/userfiles/file/fezisurakojovonusukomete.pdfIn PDF document text
    • http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16173f8495b43a---jadamawatixepepufa.pdfIn PDF document text
    • https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/2b7c1cce20e66f5520192543bd242301/fozotajiwa.pdfIn PDF document text
    • http://shriadinathbank.com/uploads/waxidarazitikubefeg.pdfIn PDF document text
    • http://alimentosldm.com/userfiles/file/rovaribupetixunijiz.pdfIn PDF document text
    • http://dragoniresorts.com/userfiles/varovorapi.pdfIn PDF document text
    • http://www.liveartsaskatchewan.com/wp-content/plugins/formcraft/file-upload/server/content/files/16197a7fd37a34---vozedavivekaveketexagowez.pdfIn PDF document text
    • https://catamma.ru/uplcv?utm_term=ayo+teo+videos++2018PDF link annotation
    • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/161c13f97a050e---7657591803.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 extracted file (font_00_sfnt_off0004ae47.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004ae47.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004ae47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AE47 10492 bytes
SHA-256: e62590355dd8899d1efd8c18bd875d6db20910a7db78cbe57107af7d75ad5e84
font_01_sfnt_off0004c66a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C66A 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off0004dd09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DD09 19572 bytes
SHA-256: 001b0c8f656359f6df00f7a0c021a2046c34031422bdacfa311c6f62bce2e3fb