Malicious PDF — malware analysis report

Static analysis result for SHA-256 487a9d308c70a159…

MALICIOUS

PDF

392.9 KB Created: 2022-03-09 10:58:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-22
MD5: dea69539f9b25e4c754aeb86615166ff SHA-1: da73ad38598ea79fee66c88399d496be94f6d2f6 SHA-256: 487a9d308c70a159ac2a93e968c31596a641e98b0ae0fdd6766e2892c2ddddcf
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9559

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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.
  • 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
  • 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://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/54290aece915f53f6230aad807e9774c/nafafuzigumobepod.pdf In PDF document text
    • https://cemb.ca/upload/editor/file/4307854333.pdfIn PDF document text
    • https://pt-olympus.com/contents/files/59350720513.pdfIn PDF document text
    • https://markiza-trade.ru/admin/ckfinder/userfiles/files/3308126074.pdfIn PDF document text
    • http://faurau.com/luodan/images/userfiles/file/33317567904.pdfIn PDF document text
    • https://masteranalog.com/userfiles/file/98927014548.pdfIn PDF document text
    • http://beergolfers.com/blog/images/file/bavogakala.pdfIn PDF document text
    • http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/8ui9gngcbitu7s56e1gtch0ggo/10469936586.pdfIn PDF document text
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/162269f9729d5c---rapufometikupak.pdfIn PDF document text
    • http://theofficeplus.com/userfiles/file/gomubutoluxuluwa.pdfIn PDF document text
    • https://tortugafilms.ca/adminfiles/file/xigivobupaveleleni.pdfIn PDF document text
    • http://njbeihang.com/uploadfile/file///2022021005143385.pdfIn PDF document text
    • http://eksan-ltd.com/userfiles/file/puwajiwaxewaxitomoluxan.pdfIn PDF document text
    • http://kht.civilkozpont.hu/uploads/file/suniven.pdfIn PDF document text
    • https://darman.shasbod.ir/UploadedFiles/New/file/56983040480.pdfIn PDF document text
    • http://allergya.news-read.com/upload/files/dotabekuje.pdfIn PDF document text
    • https://stichtingech.org/ckfinder/userfiles/files/88440309948.pdfIn PDF document text
    • http://valburysekuritas.co.id/upload/files/80738246045.pdfIn PDF document text
    • https://podar.co.za/XSRYdR1H?utm_term=vehicle+bill+of+sale+pdf+texasPDF 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 extracted file (font_00_sfnt_off0005b802.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0005b802.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005b802.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B802 17712 bytes
SHA-256: a502794090a8b7ad9e87321dcc787a9a53618e5237aeedd5ef827c86609ccd09
font_01_sfnt_off0005e5e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E5E0 10724 bytes
SHA-256: 23f80784cfb1696d1814a6be3f382d15ef80227d43f50d25b110de5dcc10111c
font_02_sfnt_off0005fe78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE78 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9