Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4fd3282a144fcdd…

MALICIOUS

PDF

93.8 KB Created: 2022-04-01 10:52:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: 9c332435b321856171439537e2e64914 SHA-1: 2bd93ecb07f1aa9006a22ef091f85eb8e12c6d4c SHA-256: a4fd3282a144fcddebc1d38dd1592de6be01b30f6fc6ed07794eea5a977604ea
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://yubit.co.za/YmrXLWy8?keyword=myers%20briggs%20intj%20characteristics PDF link annotation
    • https://www.scmribadeave.pt/sgc/Assets/Plugins/CKEditor/kcfinder/Uploads/files/jakezerufojugo.pdfIn PDF document text
    • https://pet-fashion.ro/mm/file/tanawumodovomoz.pdfIn PDF document text
    • https://zoxiniguve.weebly.com/uploads/1/3/4/5/134584112/vefufatobigivudowo.pdfIn PDF document text
    • https://zepafasamog.weebly.com/uploads/1/3/4/3/134361306/5034092.pdfIn PDF document text
    • http://vesimport.ru/userfiles/file/12636497017.pdfIn PDF document text
    • https://duxezixupedad.weebly.com/uploads/1/3/4/0/134095883/3894685.pdfIn PDF document text
    • http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/162404393f0153---motujepitolojokipupub.pdfIn PDF document text
    • http://countryclaim.cz/userfiles/file/63834834714.pdfIn PDF document text
    • https://rugexosijebup.weebly.com/uploads/1/3/4/0/134017508/3286874.pdfIn PDF document text
    • http://eventclub.pl/userfiles/file/42565496947.pdfIn PDF document text
    • http://centre.annuaire-regional.com/ckfinder/userfiles/files/beneso.pdfIn PDF document text
    • https://sydneystudytour.com/accounting/userfiles/file/22174675734.pdfIn PDF document text
    • https://stvietnam.net/luutru/files/9021407184.pdfIn PDF document text
    • https://tapegijenokog.weebly.com/uploads/1/3/4/3/134376615/fofemiva.pdfIn PDF document text
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1621860b275fbf---80292360073.pdfIn PDF document text
    • https://sirovuzi.weebly.com/uploads/1/3/7/5/137517113/6ad6013084.pdfIn PDF document text
    • http://mwbright.com/upload_fck/file/2022-2-4/20220204135320754864.pdfIn PDF document text
    • https://adsbudget.net/userfiles/file/89738692615.pdfIn PDF document text
    • https://fatomomome.weebly.com/uploads/1/3/1/6/131606630/bolirukidupawa.pdfIn PDF document text
    • https://niburisugop.weebly.com/uploads/1/3/6/0/136082965/96307ea57.pdfIn PDF document text
    • https://josilagowuf.weebly.com/uploads/1/3/4/0/134018629/marerupelebikexusu.pdfIn PDF document text
    • https://kaparatt.com/images/File/92419804626.pdfIn PDF document text
    • https://dizorewumuzesab.weebly.com/uploads/1/3/4/0/134012942/zowavof-jilag.pdfIn PDF document text
    • http://fotografieindex.nl/images/uploads/rojatemedofujobunedazunig.pdfIn PDF document text
    • https://parokaonline.hu/upload/files/tetajim.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_off00010871.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00010871.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010871.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10871 10720 bytes
SHA-256: 41e890dea1a55eaa84800d6af004234fbf8797bade0d153cd0ec61f80754706e
font_01_sfnt_off00012108.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12108 17756 bytes
SHA-256: c75f8d4a914a924f2df32915147cc9260e4c3ca1404ab03c86e18ff3bde288fb
font_02_sfnt_off00014f84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F84 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1