Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b666c1f733b8eba…

MALICIOUS

PDF

107.1 KB Created: 2021-09-11 01:16:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-17
MD5: 259d7fbc85c3681ec69b5229fc4fd8ae SHA-1: 0388cf28ce0bfd2da9cb2f8551cb59e91eba0248 SHA-256: 2b666c1f733b8eba709d66894fffb793eb0dde2aee80f33554a32ed204d84033
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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://ngocphuocjsc.com/public/default/ckeditor/files/seborojutawelezeteruxusa.pdf In PDF document text
    • https://get-insurance.in/ckfinder/userfiles/files/zobup.pdfIn PDF document text
    • https://nedimgame.net/calisma2/files/uploads/busitav.pdfIn PDF document text
    • http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b504b26ca1---subaxokowonetimejokese.pdfIn PDF document text
    • http://teakdeck.pl/files/file/90210107667.pdfIn PDF document text
    • http://skrabl.pl/www/rpbd/fck/file/rarujewevural.pdfIn PDF document text
    • https://gppacdatabase.net/userfiles/file/demimepisezolerafe.pdfIn PDF document text
    • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613847718d68b---22253890221.pdfIn PDF document text
    • https://sushixusa.com/userfiles/files/loreranaxazodobemo.pdfIn PDF document text
    • http://nigerseedindia.com/uploads/boxatuwowuzadixoxizativip.pdfIn PDF document text
    • https://prospr.fr/ckfinder/userfiles/files/xodugijedevuwemetepoxakoj.pdfIn PDF document text
    • http://emannsltd.com/userfiles/77092891450.pdfIn PDF document text
    • https://langumeistras.lt/i/File/93677064635.pdfIn PDF document text
    • http://sccsfz.org/upload/2021-09/59271238143.pdfIn PDF document text
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/n5o14o9d4ntjujpe70kl4p3ov7/9678135563.pdfIn PDF document text
    • http://atek-ent.com/upload/file/jinutelewaludasukuj.pdfIn PDF document text
    • http://ourpreferred.com/userfiles/files/16360848281.pdfIn PDF document text
    • http://hwayoung.kr/upfile/files/82797809291.pdfIn PDF document text
    • https://regaluxiluminacion.com/uploads/assets/file/gasasere.pdfIn PDF document text
    • https://firsatpin.com/calisma2/files/uploads/76678412340.pdfIn PDF document text
    • http://giga.sk/storage/file/82607568435.pdfIn PDF document text
    • http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/161360f52af9fb---zukasofuke.pdfIn PDF document text
    • http://malovanesklomh.cz/images/file/71512710092.pdfIn PDF document text
    • https://cmoretv.com/userfiles/81945134189.pdfIn PDF document text
    • http://bike-aholic.com/UserFiles/file/68764697525.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=harga+hp+sony+android+dibawah+1+jutaPDF 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_off00013a82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A82 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00015294.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15294 18972 bytes
SHA-256: d66f0800208b22f44b3095312a76942abe4f4234207346d9b7676615affdcf96
font_02_sfnt_off000184cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x184CB 11108 bytes
SHA-256: 1f0cab10e94fdf90a54e4f051545b1ed35b5cba8e5abcf6159be33b13980b150