Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa87fbc083504524…

MALICIOUS

PDF

79.0 KB Created: 2022-05-05 23:02:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: ee846231543bd2d7b2eb1b1f7530992b SHA-1: c1df397448b947f3fff07f44c3bccf324344306b SHA-256: aa87fbc083504524253bb4da8ee9c84381b0a2827964418cfa072c5cc53b666e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a significant number of external links, many hosted on disposable domains, indicative of a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. The embedded JavaScript, though not fully analyzed due to obfuscation, is a common vector for exploiting PDF vulnerabilities or initiating further malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

Heuristics 7

  • 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.
  • 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://tevav.co.za/YmrXLWy8?keyword=easy%20geometric%20string%20art%20patterns%20pdf%20free%20printables%20printable PDF link annotation
    • https://xovokemuzulu.weebly.com/uploads/1/3/4/7/134703915/6563391.pdfIn PDF document text
    • https://nobepitolixedi.weebly.com/uploads/1/3/4/5/134516182/4662635.pdfIn PDF document text
    • https://posoxoniboje.weebly.com/uploads/1/3/4/7/134713430/tomifawa.pdfIn PDF document text
    • https://gijamaxo.weebly.com/uploads/1/3/0/7/130740113/45c2dc5f.pdfIn PDF document text
    • https://vidafaloduwi.weebly.com/uploads/1/3/4/7/134716621/takurelowofub.pdfIn PDF document text
    • https://basafokadu.weebly.com/uploads/1/3/4/7/134706648/runekekole.pdfIn PDF document text
    • https://ruvudiroxutorag.weebly.com/uploads/1/3/0/7/130775702/1967719.pdfIn PDF document text
    • https://rowafitiw.weebly.com/uploads/1/3/4/6/134608100/jolusizurewakuwegosi.pdfIn PDF document text
    • https://jatevabuxises.weebly.com/uploads/1/3/5/3/135382810/wupusosub.pdfIn PDF document text
    • https://kozenizotimil.weebly.com/uploads/1/4/1/3/141349799/kedafavabuni.pdfIn PDF document text
    • http://fashioneducation.ru/userfiles/file/xelururepizidasobabivav.pdfIn PDF document text
    • http://osteriadelcampanile.com/userfiles/files/tefanoturuwuf.pdfIn PDF document text
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/16270ebd93624c---rukefaxafosigivoxopokaj.pdfIn PDF document text
    • https://tewetakejuduz.weebly.com/uploads/1/3/2/7/132740850/xotabolodidujel_pinirodawo_memelefejigewa_kogejef.pdfIn PDF document text
    • http://elt-tm.uz/kcfinder/upload/files/forexinerire.pdfIn PDF document text
    • https://mewabasotu.weebly.com/uploads/1/3/5/3/135312567/sepizi_fozozemubufef.pdfIn PDF document text
    • https://rimi.sk/userfiles/file/lazarunepetuzagekolav.pdfIn PDF document text
    • https://wuriwodek.weebly.com/uploads/1/3/4/6/134688082/guribukuxajurigixu.pdfIn PDF document text
    • https://www.coopi.org/admin/assets/js/ckeditor/kcfinder/upload/files/files/sikepotagokuluv.pdfIn PDF document text
    • http://ore-processing.ru/d/files/2727518316.pdfIn PDF document text
    • https://rajovubipig.weebly.com/uploads/1/4/1/4/141413941/firimakamipa.pdfIn PDF document text
    • https://www.nutfruit.org/js/admin/ckeditor/plugins/kcfinder/upload/files/zepukejulimojo.pdfIn PDF document text
    • https://zesalefol.weebly.com/uploads/1/3/5/9/135994098/9270489.pdfIn PDF document text
    • https://gawubodukajine.weebly.com/uploads/1/3/0/9/130969599/0c5bf4.pdfIn PDF document text
    • https://tobevasisutigi.weebly.com/uploads/1/3/0/8/130814636/feb28402fa.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 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_off0000cd70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD70 16708 bytes
SHA-256: c55672c09ed6b34b91394ed7bd736abd71810b0c72f1e9ad33bbcd23119857f8
font_01_sfnt_off0000f8da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8DA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000110f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110F1 11200 bytes
SHA-256: d9111fd396ffbe9bb0228818d67a2a50bd1d54633161a9b53aac3ae6f7b254c1