Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4ff180b91bc4580…

MALICIOUS

PDF

70.4 KB Created: 2022-05-13 04:55:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: 640ac3fd2863335787e7abefc890be43 SHA-1: d977cde8ab2c9e02aacdb62df9dddd915bf53f19 SHA-256: a4ff180b91bc45800df4fa4f77af4b3f2414ec6d69f4f570705ceb7abed04e4d
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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://wirut.co.za/YmrXLWy8?keyword=bhagavad%20geetha%20malayalam%20pdf%20online%20free%20full%20text PDF link annotation
    • https://tesutubesonazi.weebly.com/uploads/1/3/4/6/134682982/5430131.pdfIn PDF document text
    • https://jaregufadux.weebly.com/uploads/1/3/4/0/134016720/3936874.pdfIn PDF document text
    • https://zuligenewem.weebly.com/uploads/1/3/4/7/134749141/742b2bed.pdfIn PDF document text
    • https://basopuseg.weebly.com/uploads/1/3/4/7/134703880/dowun-zefirunezufabu.pdfIn PDF document text
    • https://xojafoma.weebly.com/uploads/1/4/1/6/141675686/2424752.pdfIn PDF document text
    • https://goxutorapuwut.weebly.com/uploads/1/4/1/2/141255410/bofol.pdfIn PDF document text
    • https://wurokilusonopos.weebly.com/uploads/1/3/5/3/135345649/b0a7f12cd0ee4f6.pdfIn PDF document text
    • http://nevacomposites.com/public/kcfinder/upload/files/99857037559.pdfIn PDF document text
    • https://gewufigidu.weebly.com/uploads/1/4/1/5/141560250/wupidokixirewapule.pdfIn PDF document text
    • https://talowitutujuf.weebly.com/uploads/1/3/3/9/133999148/judufubujinuvi_gojaf_dokewujaw.pdfIn PDF document text
    • https://serviceelectric.ca/userfiles/file/fajudepinoxof.pdfIn PDF document text
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621c0d7432f98---jovatotuxerimakizupelizus.pdfIn PDF document text
    • http://okinawa-touch.com/app/webroot/js/kcfinder/upload/files/98501424411.pdfIn PDF document text
    • https://kavosimodo.weebly.com/uploads/1/3/4/9/134901779/luwabosuwakefuritox.pdfIn PDF document text
    • https://mefupajudeto.weebly.com/uploads/1/3/4/8/134883840/votibizunu_zipobipotuvi.pdfIn PDF document text
    • https://www.fukuyama-ramen.com/editors/kcfinder/upload/files/54503908819.pdfIn PDF document text
    • http://www.roosprommenschenckelfoundation.nl/ckfinder/files/files/38622876121.pdfIn PDF document text
    • https://xomakasus.weebly.com/uploads/1/3/4/6/134696708/rupudidixarox.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_off0000acca.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000acca.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000acca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACCA 11212 bytes
SHA-256: 1c828ea9ab9a03cdec75d4427b3f4c37c2a1d5de83ca56aa0227e934b877561c
font_01_sfnt_off0000c6a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6A6 17376 bytes
SHA-256: 6d332a66d337788f8e5af21b008d79e1e8366e6558c9a885103b263111c451a5
font_02_sfnt_off0000f365.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF365 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1