Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3048d27943bc476…

MALICIOUS

PDF

85.2 KB Created: 2021-06-27 07:04:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 85a273cf93779ad9720ddeae7cc1a767 SHA-1: 0b83edde2e0036c724b476242befb0a9eda4c871 SHA-256: e3048d27943bc4762272be0a0ee22ea5f3d900c4846bf29061e7ab4776efe557
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to compromised CMS upload directories, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the PDF structure itself is indicative of a malicious lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • 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://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16091bdda350a9---73234356764.pdf In PDF document text
    • http://alhouti.com/userfiles/file/dotefilenojek.pdfIn PDF document text
    • http://i-daa-wl.de/userfiles/zivupamibipisa.pdfIn PDF document text
    • http://logiccpacma.com/ckfinder/userfiles/files/44461944021.pdfIn PDF document text
    • http://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608b0d1872cfe---sipokifisutijenopurinit.pdfIn PDF document text
    • http://hoondb.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083124c2549f---66839182598.pdfIn PDF document text
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608620edef3b1---wigogivirusomamofenaxuk.pdfIn PDF document text
    • https://kurek-rowery.pl/user_pict/file/bavez.pdfIn PDF document text
    • http://fsgpj.com/upfolder/e/files/20210616225627.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608255e5923eb---fuxejutogune.pdfIn PDF document text
    • https://marosme.ro/hirek/file/darabobe.pdfIn PDF document text
    • https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/fbb004f2d32fd63a577a9a40a041a224/febuduxunixipipijumibuxox.pdfIn PDF document text
    • http://vietthanhstone.com/images/news/file/88989807679.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160729516912b3---71968063876.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad408749198---lejepasobitelijimomi.pdfIn PDF document text
    • https://www.properties-thassos.com/wp-content/plugins/super-forms/uploads/php/files/1dbdrj7slh4cjq61eanivnu3jo/rajumabe.pdfIn PDF document text
    • https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16098c87476893---79739997994.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/81daede88102f8cced87a4bb9d47fd04/15859288449.pdfIn PDF document text
    • https://www.spreefahrten-berlin.de/wp-content/plugins/super-forms/uploads/php/files/2d4bu00v4gl9pd0ltbm7h842me/9199483095.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=introduction+to+statistics+and+data+analysis+5th+edition+pdf+freePDF 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_off0000e7f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F8 17292 bytes
SHA-256: 12903892cd9c007a579cf3fc2af4b128ad8502a341a7aa525656fdb23320fe67
font_01_sfnt_off00011595.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11595 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012dac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DAC 11016 bytes
SHA-256: 2e19500888c395f8fde3fa3c96779639e0f78efacb8478ac9acc386600eeec40