Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bc4c3e0d69c9e9d…

MALICIOUS

PDF

82.2 KB Created: 2021-09-18 17:24:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-20
MD5: 5c3cefac9beb911e43b568e1f44190aa SHA-1: 920e8577392821dd4318c5a2663320e51c1827ed SHA-256: 3bc4c3e0d69c9e9d7a83fbc93c19f86a4622fd2a84027a3472d80bbb45a0b89c
282 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 8

  • 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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Viral-video clickbait PDF links to suspicious host critical SE_VIRAL_VIDEO_CLICKBAIT_LINK
    Document uses viral/leaked-video lure text and links to a suspicious disposable-looking web host. This is a clickbait/traffic-scam carrier shape rather than a benign PDF link.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://mobspace.xyz/web/img/podborky/files/33843356674.pdf In PDF document text
    • http://hrzservices.com/uploadfiles/file/65945275121.pdfIn PDF document text
    • http://esistore.de/userfiles/file/deduwipemi.pdfIn PDF document text
    • http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/16138ea96a3760---43781071315.pdfIn PDF document text
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/c41e377ed06d8acbab5011440768ab29/nojozefefelukinodel.pdfIn PDF document text
    • https://812423.qqtogeljackpot2.com/contents/files/sokusudamedof.pdfIn PDF document text
    • https://www.truck-transport.com/ckfinder/userfiles/files/72510608785.pdfIn PDF document text
    • http://starcity-vinhomes.vn/app/webroot/img/files/95724462979.pdfIn PDF document text
    • http://baohanhranghm.com/upload/img/files/sujirifo.pdfIn PDF document text
    • http://naphogacomposite.com/upload/files/30991991937.pdfIn PDF document text
    • https://cfi-registration.amyhalter.com/buzzboxgift/img/userfiles/files/81212762039.pdfIn PDF document text
    • http://ipayon.com/root/FCKeditor/file/17566271153.pdfIn PDF document text
    • http://www.deco-interieure.com/userfiles/file/75339548610.pdfIn PDF document text
    • http://dotacjedlaoze.pl/userfiles/file/14246834795.pdfIn PDF document text
    • http://tostonet.cl/ckfinder/userfiles/files/kipubanulowamagog.pdfIn PDF document text
    • http://fine-cottage.ru/userfiles/files/93516194150.pdfIn PDF document text
    • https://bestcoloringpages.com/userfiles/file/21420437492.pdfIn PDF document text
    • https://thefertilizergranulator.com/d/files/13962456714.pdfIn PDF document text
    • http://rfaaa.com/UploadFile/file/20210914114627317.pdfIn PDF document text
    • http://kaies.cn/upfiles/210917042649165831r06iok.pdfIn PDF document text
    • http://mp-journal.com/media/file/55596636740.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c9763e73e3---12742414176.pdfIn PDF document text
    • http://limuzine.md/userfiles/file/mosenino.pdfIn PDF document text
    • http://uniradioweb.info/userfiles/files/54087555040.pdfIn PDF document text
    • http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16135d8e87c66e---vusuzumopoxujifilemitipe.pdfIn PDF document text
    • https://huntic.ru/uplcv?utm_term=raja+hindustani+full+movie+downloadIn 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_off0000dd0a.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000dd0a.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD0A 17140 bytes
SHA-256: 175923580eaf244916f948d6f3d4417c718a8c20ecb37cf7cc9b23e3dcded704
font_01_sfnt_off00010961.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10961 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012178.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12178 10944 bytes
SHA-256: 07eb264eb76eb19b4a29ab6356930434f1aa5ea589af6c2c8245b174cfe62a75