Malicious PDF — malware analysis report

Static analysis result for SHA-256 19162a089e8fe5ff…

MALICIOUS

PDF

91.5 KB Created: 2021-09-05 18:24:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: c49b85c0bdae1a8195afe3418105e5bb SHA-1: 6c67c79f0c342aee5c3a5a3b1f7e92cbf1f98969 SHA-256: 19162a089e8fe5ff473a3612437ae40ce131cfadffcb35bac022f2fb29a6918a
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://allytemp.ru/uplcv?utm_term=how+to+rotate+pdf+and+save+changes+in+adobe+pro PDF link annotation
    • http://biosite.ru/images/news/file/64198758014.pdfIn PDF document text
    • http://xlsferrosilicon.com/d/files/fekujume.pdfIn PDF document text
    • http://infrabud.eu/fckpliki/file/99749730587.pdfIn PDF document text
    • http://krakow4you.pl/krakow/files/bilanovavexewusixubor.pdfIn PDF document text
    • https://aplusadvance.com/naver_editor/data/file/fetejakawakojodilawuf.pdfIn PDF document text
    • http://sity-luxe.ru/userfiles/file/8050622112.pdfIn PDF document text
    • https://thejasmineway.net/wp-content/plugins/super-forms/uploads/php/files/ido1dn5nrt3csepvpsrl1kcmsl/60907001456.pdfIn PDF document text
    • https://www.hinogas.com/wp-content/plugins/super-forms/uploads/php/files/tg24fv5n35un978vmosr0vv5g0/53951831533.pdfIn PDF document text
    • http://voijin.com/userfiles/files/58618266520.pdfIn PDF document text
    • https://haltia.mx/sii/ckfinder/userfiles/files/64568757722.pdfIn PDF document text
    • https://jotekonybakterium.hu/userfiles/files/nabudinibunokebasofewowo.pdfIn PDF document text
    • http://cosmikkino.ru/sadm_files/wutaw.pdfIn PDF document text
    • https://www.litesourcenc.com/wp-content/plugins/super-forms/uploads/php/files/d52b6bb97c57900457699f8e52aabaee/9898140059.pdfIn PDF document text
    • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076883de2b11---nasobojafopesurov.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbdb4d6697d---79792344259.pdfIn PDF document text
    • http://otelm4b.ru/admin/ckfinder/userfiles/files/68129958796.pdfIn PDF document text
    • https://completecollegestrategies.com/wp-content/plugins/super-forms/uploads/php/files/5e18ef7fc24d42e090bcb68bc20d1b6f/41562148561.pdfIn PDF document text
    • http://chiengthai.com/file_media/file_image/file/nolusogosemotopiv.pdfIn PDF document text
    • http://asckhn.com/acskhn/userfiles/file/63021058941.pdfIn PDF document text
    • http://zs-g.jp/app/webroot/js/ckfinder/userfiles/files/gigigararafixuf.pdfIn PDF document text
    • http://bscartridge.com/pic/vabenuvedesesifewop.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/16094d56d69778---ratomojipovurixagolufu.pdfIn PDF document text
    • http://al-farh-iq.com/upload/userfiles/file/bodimafabosotimulugak.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 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_off000100db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100DB 11136 bytes
SHA-256: bb0e760d53fa58d6695d781723620daaaaaaa87c20109351d7dc937509869378
font_01_sfnt_off00011a66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A66 17684 bytes
SHA-256: 92542db11410c1b9311b0ef38b5906573b67eaf916398d60f0f72cf49c5d786b
font_02_sfnt_off0001485e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1485E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1