Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8b4484e87f67c0f…

MALICIOUS

PDF

74.5 KB Created: 2022-04-18 01:11:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-06
MD5: aa57d991699a8b854f0028ab839664ee SHA-1: 7979294c82bccfa0b72f73486a2d2364c43287d4 SHA-256: a8b4484e87f67c0fae8c4354b3f51af5342d1e19ed9757e06a482d6e1e0c3912
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://loheb.co.za/YmrXLWy8?keyword=how%20to%20drain%20maytag%204000%20series%20washer PDF link annotation
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16226fd8c80ebf---69734907870.pdfIn PDF document text
    • https://sivojazexokir.weebly.com/uploads/1/3/4/5/134587079/1708894.pdfIn PDF document text
    • http://zkpower.net/upload/files/16051865292.pdfIn PDF document text
    • http://studiopassarotti.it/userfiles/files/99407428057.pdfIn PDF document text
    • https://lerivagedesmilleetangs.com/caningest/images/file/57895165301.pdfIn PDF document text
    • https://kaxapajitab.weebly.com/uploads/1/3/4/8/134896246/daxabiwibiware-pujalesidubesol.pdfIn PDF document text
    • https://fikadodovawewa.weebly.com/uploads/1/3/4/3/134320255/zutixebigitodela.pdfIn PDF document text
    • https://www.cvr2021.scrs.in/kcfinder/upload/files/zudejexux.pdfIn PDF document text
    • https://kevugekakizuxo.weebly.com/uploads/1/3/4/4/134481001/2e720ae29e.pdfIn PDF document text
    • https://xikemusuvef.weebly.com/uploads/1/3/4/3/134322181/wepuzoritetudepegel.pdfIn PDF document text
    • http://www.alcera.ca/userfiles/file/roxikikazorabokise.pdfIn PDF document text
    • http://mms.vru.ac.th/kcfinder/upload2565/files/39965827572.pdfIn PDF document text
    • http://zetrade.cz/userfiles/file/54525836589.pdfIn PDF document text
    • http://globalfeedindustry.com/upload/files/dajam.pdfIn PDF document text
    • http://theprofitnesstrainers.com/userfiles/file/fukis.pdfIn PDF document text
    • http://siva.re/app/webroot/js/kcfinder/upload/files/14837960552.pdfIn PDF document text
    • http://wu-pao.com/upfiles/editor/files/votawevuxujela.pdfIn PDF document text
    • https://myleague.vn/uploadfiles/kcfinder/files/xedasotevovojezegexevewo.pdfIn PDF document text
    • https://bejivuvepezera.weebly.com/uploads/1/3/4/4/134437422/ac1dc.pdfIn PDF document text
    • http://dpnovelty.com/upload/files/70341349729.pdfIn PDF document text
    • http://skolka.pencin.cz/soubory/file/vosexuxevuwas.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_off0000bdb5.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000bdb5.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bdb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDB5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d5c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5C7 16776 bytes
SHA-256: 45c2f9424c915cffa4e757af769d428e488f6aa73002f1f252f1cab1fdcf07c0
font_02_sfnt_off000101a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101A5 11040 bytes
SHA-256: c0f3f3d1545796e838bc5ec4fb59c0a160cf0c20b2b18cba216704d6d7d07a9b