Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9c9ff9c42dacaee…

MALICIOUS

PDF

194.8 KB Created: 2022-02-21 09:15:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-26
MD5: 58b4aa8bc001524ba1e0362400ef3c30 SHA-1: cfc7ef1771cc0346b77d74eb5f196c8f3b9d74bb SHA-256: a9c9ff9c42dacaee0c3da5a5e344d5b601f3f0c9d84aea99407388ec82851359
236 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8303

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 link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • 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://cafij.co.za/XSRYdR1H?utm_term=android+17+voice+actor+dub PDF link annotation
    • http://whatifitspossible.com/ckfinder/userfiles/files/dutaxexamuwusu.pdfIn PDF document text
    • https://rt-totaalafbouw.nl/userfiles/file/zeparusogobupulim.pdfIn PDF document text
    • https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/8r0sbflhubacvp46dm111rt2b6/renapur.pdfIn PDF document text
    • http://aquarium-kochi.com/app/webroot/ckfinder/userfiles/files/35421534579.pdfIn PDF document text
    • https://epm.jot-solutions.com/files/zojuxiru.pdfIn PDF document text
    • https://casasholidays.com/scgtest/team-explore/uploads/files/tebarufutesaxoluguxi.pdfIn PDF document text
    • http://life-worldwide.org/assets/uploads/files/wajudaxaveku.pdfIn PDF document text
    • https://apaman.ti-am.jp/js/ckfinder/userfiles/files/49010903435.pdfIn PDF document text
    • https://abm-network.com/kcfinder/upload/files/38862108860.pdfIn PDF document text
    • http://rebizplus.com/userfiles/file/tirasom.pdfIn PDF document text
    • http://2rent.gr/userfiles/file/vutemutuwegudowogapidegu.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/161c11da5ce1c3---resovugepolimurokalelu.pdfIn PDF document text
    • http://firmen-bekleidung.at/userfiles/file/57535972729.pdfIn PDF document text
    • https://superiorservicesandsolutionsfl.com/nbloom/fckuploads/file/dafiwinugu.pdfIn PDF document text
    • https://biocoils.com/img/file/tipewago.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/161c0106b0e7fe---12118711109.pdfIn PDF document text
    • http://xn----7sbabjkhbzbqti4a3apfmdd2s4b.xn--p1ai/ckfinder/userfiles/files/rezabavugukuzefefolabat.pdfIn PDF document text
    • http://masan315.net/board/imagefile/file/69381842887.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16205856d8c170---56471926775.pdfIn PDF document text
    • http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e92fabf0cca---53368812111.pdfIn PDF document text
    • http://avanti.pl/userfiles/file/nuvedapizul.pdfIn PDF document text
    • http://ipsc-pv.cz/kcfinder/upload/files/60300188968.pdfIn PDF document text
    • https://exam10.menapoint.com/app/webroot/upload/files/marosoru.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161f6384d83f70---sopesupokelelobisogedegi.pdfIn PDF document text
    • http://jungvassar.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/73787045666.pdfIn PDF document text
    • https://12tiga.com/contents//files/lenafiw.pdfIn PDF document text
    • http://uktohabbarijamalta.com/files/file/78330143399.pdfIn PDF document text
    • http://budget-pl.com/ckfinder/userfiles/files/41692770714.pdfIn PDF document text
    • http://fixafilm.se/userfiles/file/83015656636.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 extracted file (font_00_sfnt_off00029740.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00029740.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00029740.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29740 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0002ae60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AE60 10536 bytes
SHA-256: 392ec74f6dec92ddd87ccdb7686e5ef3723f05dd65130acf3d0b623b13878020
font_02_sfnt_off0002c69a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C69A 20332 bytes
SHA-256: 924157b1741be3ddfd594ff6bca8f125d9ea21761dc2881eabef5f92d467ff7e