Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc8eebd0f7240a05…

MALICIOUS

PDF

83.0 KB Created: 2021-09-05 13:08:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: fdbd1d54f030f61b956ad386b50f6550 SHA-1: 5b385cc9f08e6bf8dd5c9ee4c8503000babe4999 SHA-256: bc8eebd0f7240a053126427dece4668b56035c8d51fe3fd96f624d1dffa6193e
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. It contains a link farm pointing to multiple compromised WordPress sites, likely intended to host or distribute malicious files. The presence of embedded URLs and the 'download button' heuristic suggest a lure to trick users into downloading a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://guides2alpes.fr/uploads/file/vefazinukavikatame.pdf In PDF document text
    • http://alessandrobelleseveterinario.eu/userfiles/files/dumatorozojabage.pdfIn PDF document text
    • https://aventura-agence.lu/userfiles/files/74516390674.pdfIn PDF document text
    • http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607c178f5e891---xenogetafuvokasazawuk.pdfIn PDF document text
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/eb2f7f03cae35cd0b8f158d1f91bfe24/motuselubogezunobinur.pdfIn PDF document text
    • http://cleangroupbd.com/ck/upload/files/zezogifemisebilenuxezan.pdfIn PDF document text
    • https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/160bd9c50192b5---90527884550.pdfIn PDF document text
    • http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160863ec43a4ae---musuwu.pdfIn PDF document text
    • https://apparel.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/f47ed38ebc5a5d4ffe0d1dd54a095c56/89545931154.pdfIn PDF document text
    • http://tunglamgarden.com/images/fck/file/mebilo.pdfIn PDF document text
    • http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/f731eb6019646580b7f5aeec97152123/52440919668.pdfIn PDF document text
    • http://papianiarch.it/userfiles/files/sajatinatuzuwit.pdfIn PDF document text
    • http://ttccid.com/userfiles/files/jarineg.pdfIn PDF document text
    • http://profisystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160944f5e9d749---tuzenomaxid.pdfIn PDF document text
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/160a2f3194cd2f---10657095129.pdfIn PDF document text
    • http://exoticland.bg/upload/files/files/wilalesofalepak.pdfIn PDF document text
    • http://www.orhancoskun.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090c00413780---jotoze.pdfIn PDF document text
    • http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160862fb3ccab8---gilugazazolijudaru.pdfIn PDF document text
    • http://alburigiott.it/userfiles/files/zafidilikirepisewon.pdfIn PDF document text
    • http://yourtruck.be/upload/ckeditor/file/runoj.pdfIn PDF document text
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b609a92583---64949870019.pdfIn PDF document text
    • http://misosmile.com/upload/editor/files/47972449862.pdfIn PDF document text
    • http://cupta.org/userfiles/files/20210527235957.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=simplification+questions+for+sbi+po+exam+pdfPDF 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_off0000d814.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD814 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f02b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF02B 11344 bytes
SHA-256: 233cc33e9cbb6474556e506cd8a78bddcd466957e54d5958ee11f04e8dd83938
font_02_sfnt_off00010a67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A67 19824 bytes
SHA-256: 8d391e88cc879df387d5736317094a5e7ea48a3cb550998525a647afed5e0f6a

Open this report in the interactive analyzer, or submit your own file for analysis.