Malicious PDF — malware analysis report

Static analysis result for SHA-256 191aeac6e7530a56…

MALICIOUS

PDF

80.4 KB Created: 2021-09-19 21:32:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: 6c56dde841a05f9111093dbfb159d080 SHA-1: 61dd11a2b7e064b9c1e94b429c41fbe90cb51715 SHA-256: 191aeac6e7530a562ae46450a4587e57c10cf1166781c107a601d709ac100009
116 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 6

  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.
  • 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://anctools.com/ckfinder/userfiles/files/safuladakebuno.pdf In PDF document text
    • https://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/4840709506b090dce5189fa0e44498d8/wezonezebepamusilamivab.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/161344680b7e81---foketulexekubelozepaj.pdfIn PDF document text
    • https://www.barrau-philippe-sedeco.fr/ckfinder/userfiles/files/72788914891.pdfIn PDF document text
    • https://yuktogel.com/contents/files/24821702962.pdfIn PDF document text
    • https://netwindowvn.com/uploads/userfiles/file/33360538070.pdfIn PDF document text
    • http://www.siphonicflowmandiri.com/upload/files/pajulazura.pdfIn PDF document text
    • https://www.abrasco.org.br/ckfinder/userfiles/files/54243413406.pdfIn PDF document text
    • https://spyboarcams.com/files/99361460661.pdfIn PDF document text
    • https://magiccat.pro/ckfinder/userfiles/files/wetidajotav.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/161377832c8145---rubevalovotawililopix.pdfPDF link annotation
    • http://lso-msm.com/userfiles/file/49931453332.pdfIn PDF document text
    • http://detskaoptika.cz/ckfinder/userfiles/files/bavapaxaxonofenuzavise.pdfIn PDF document text
    • http://ingore.cn/upload/files/rateramimapusogi.pdfIn PDF document text
    • https://monographie.com/ckfinder/userfiles/files/bomizokazu.pdfIn PDF document text
    • https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/161413928ccf61---58356916477.pdfIn PDF document text
    • http://rnralpha.cz/res/file/sufuno.pdfIn PDF document text
    • https://xn--72ca1bzcdf9cg5df4n5a8cei.com/userfiles/files/vupega.pdfIn PDF document text
    • http://lyzebrno.cz/userfiles/file/kenifetexusoruluxomino.pdfIn PDF document text
    • http://eva.am/files/10161e9bdb1d8f4d.pdfIn PDF document text
    • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/16137d90654b0a---femujozimuxipitolede.pdfIn PDF document text
    • http://architettoseneca.com/userfiles/files/44697485201.pdfIn PDF document text
    • http://clinicaveterinariaalbese.eu/userfiles/files/4229638040.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=apk+pixel+gun+3d+modPDF 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 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_off0000d41b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD41B 18440 bytes
SHA-256: 16588cf2f2092cd350f48f2cd16b20a1182bab1164168282165f42f29fbfb354
font_01_sfnt_off0001039c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1039C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011bb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BB3 10656 bytes
SHA-256: 03ccbe8a1c21b720c7d064c7e77de5292b94e40439dda5c56bfecdf8ffb6648c