Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cc3ca2626e28131…

MALICIOUS

PDF

102.5 KB Created: 2021-07-06 00:34:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: be6290302269bc53a56bc193d475e1df SHA-1: 61b7a4c8e662c2587aae6c629cde448803bd7a3e SHA-256: 8cc3ca2626e281318159305c73b869413ac003a252c6d64ce100ac51f60a19e0
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to compromised CMS upload directories and disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of external URIs and the overall structure indicate an attempt to exploit users by directing them to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9773

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://al-bandak.com/userfiles/file/satedazuz.pdf In PDF document text
    • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2d2ed7746a---biforufefobivot.pdfIn PDF document text
    • http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c6ea59291ba---rixodokorujulunemire.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf943fd4e57---49542741441.pdfIn PDF document text
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1336b245c2---76531924329.pdfIn PDF document text
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a070976ad30---50439802393.pdfIn PDF document text
    • http://ebslang.net/_UploadFile/Images/file/jonelifi.pdfIn PDF document text
    • http://www.asap-recruitment.net/upload/file/fakijosavoni.pdfIn PDF document text
    • https://petala.gr/userfiles/file/mofikunokap.pdfIn PDF document text
    • http://newtarrytowndeli.com/uploads/files/nuxibijumepimabagod.pdfIn PDF document text
    • http://permanentnimakeup-brno.cz/userfiles/files/zipovapoparux.pdfIn PDF document text
    • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160be065224094---tabuv.pdfIn PDF document text
    • https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/g12vc2mltjlc1vf1icekki0of0/vuburoru.pdfIn PDF document text
    • https://www.napariverinn.com/wp-content/plugins/super-forms/uploads/php/files/2e509e371dadce4394d51ebfc2cb5548/63358449499.pdfIn PDF document text
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608b37879bef8---18396185243.pdfIn PDF document text
    • https://www.crossfitparamaribo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ef3da03768---bifizamezuvakew.pdfIn PDF document text
    • https://talaa-obour.com/webmisr/uploadwebmisr/file/mobenarozixenegetumu.pdfIn PDF document text
    • http://asupuro.com/user_data/image//file/nozewevado.pdfIn PDF document text
    • https://hkparkkonutlari.com/image/files/xozodojidibixasir.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609587d97f3ff---dazigumezo.pdfIn PDF document text
    • http://automozg.by/upload/editor/files/vizom.pdfIn PDF document text
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/16071b2afdb21b---19008686574.pdfIn PDF document text
    • http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608dfe71a2e24---76606306717.pdfIn PDF document text
    • http://crystalnymph.by/wp-content/plugins/super-forms/uploads/php/files/a1ef46a1cb02b0fe88da81ce9b16687e/vigelamupa.pdfIn PDF document text
    • https://acrgroup.nl/userfiles/file/doxutonoxobevajube.pdfIn PDF document text
    • https://hirurgija.me//files/1574922759.pdfIn PDF document text
    • http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160814c15128b0---81600960537.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=different+ways+to+raise+money+for+charityPDF link annotation
    • 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_off00012cc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CC0 17456 bytes
SHA-256: 3ca192bdd379d6fcb71f067c7a04264cc143dd25c7548e4f4871a6c5af1cf549
font_01_sfnt_off000159be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x159BE 10756 bytes
SHA-256: c9197f9b3e7e401c3dfc4cff9ca2cd896209a5c34c79506a375c41eabe3e95c9
font_02_sfnt_off0001726b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1726B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1