Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8b2372aac3f185f…

MALICIOUS

PDF

392.5 KB Created: 2022-03-31 02:55:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-06
MD5: fe3bca8d0457d7b7acb145e03fe97d95 SHA-1: f3e6c17ba394080b9dd153e4bf980bbdbdc0eb97 SHA-256: a8b2372aac3f185ff1609bac9104c847181e7b6eff16accf1d182f462f30427d
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6523

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://kultmotor.virtualbodybuilding.hu/images/files/ruvejolekawimudik.pdf In PDF document text
    • http://bigbulkbags.ahmadpackages.com/survey/userfiles/files/33085532774.pdfIn PDF document text
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620daaf12f703---wobob.pdfIn PDF document text
    • https://loroxiboziniluz.weebly.com/uploads/1/3/4/4/134402159/penejuratupopog.pdfIn PDF document text
    • http://cloudinfo01.smartevolve.com/images/ckeditor/files/13882445124.pdfIn PDF document text
    • http://bafiti.com/sklep/userfiles/file/sukiwanogogag.pdfIn PDF document text
    • http://hqr-group.com/admin/kcfinder/upload/files/95778651192.pdfIn PDF document text
    • http://medicareclinichowrah.net/faboriginelist-braj/userfiles/file/zinitisuxoduwunupefupexev.pdfIn PDF document text
    • http://afro-safari.com/upload/files/nekalasudusuzebagutisota.pdfIn PDF document text
    • https://igmof.com/admin/js/kcfinder/upload/web_file_ig_1/files/78934812395.pdfIn PDF document text
    • https://wadagoxegoti.weebly.com/uploads/1/3/4/3/134385229/giwepexunosa_fowajilujukigim_tujimegevasij.pdfIn PDF document text
    • https://sunnyrosesschool.com/userfiles/file/nefaf.pdfIn PDF document text
    • https://dibekepoxifepef.weebly.com/uploads/1/3/4/5/134587143/givubebi-femutakizinaz-disosawuge-vabowu.pdfIn PDF document text
    • http://xn--42-jlclgg6a3e.xn--p1ai/userfiles/file/wenizo.pdfIn PDF document text
    • https://rumuxino.weebly.com/uploads/1/3/5/3/135324707/48030.pdfIn PDF document text
    • http://mayingiabao.com/upload/files/25871521622.pdfIn PDF document text
    • https://gumijaxedug.weebly.com/uploads/1/3/4/5/134529094/dojekoromevu_tudikaxudotane_supusadezusavi_fawugonodivele.pdfIn PDF document text
    • https://melenoradu.weebly.com/uploads/1/3/4/3/134340649/vakagusutus-sixadefo.pdfIn PDF document text
    • http://www.gets-trade.com/webroot/upload/files/donerigiwi.pdfIn PDF document text
    • http://xingzhongjing.com/userfiles/file/20220303205424_454669623.pdfIn PDF document text
    • https://xibedawik.weebly.com/uploads/1/3/4/5/134584063/113720.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/162005fc795ba8---66500126996.pdfIn PDF document text
    • https://yoyep.co.za/XSRYdR1H?utm_term=libros+de+nutricion+infantil+pdfPDF 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_off0005ab8d.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0005ab8d.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005ab8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AB8D 21672 bytes
SHA-256: de7ebce093e1250a064c4574e00a870c7d01501171e4729cb07d1561fbc9fa66
font_01_sfnt_off0005e284.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E284 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0005f9a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F9A4 10812 bytes
SHA-256: a2d7df17c10b2d13282666600647e613b91052fe4bf7453d8d49121b2315f76e