Malicious PDF — malware analysis report

Static analysis result for SHA-256 25ce39f9b4e1467b…

MALICIOUS

PDF

100.4 KB Created: 2021-07-04 09:17:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 406c8bd5ed80e358583c2b81be0d8d9d SHA-1: 84d4e2806d5aa4ac50412a608e3584aa47007232 SHA-256: 25ce39f9b4e1467be5fa862811e70020169663e1becebe822c1f07ed6d12a5b0
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous links, many pointing to domains that appear to be compromised or used for hosting malicious content. The document's structure suggests it functions as a link farm, designed to redirect users to external sites, likely for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9909

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 https://dm288.com/slicice/file/tizowofitam.pdf In PDF document text
    • http://rainbowcaterers.in/userfiles/file/firosesotilovuzizixesoxib.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/9ak19tmuorrfels9kf1nh1ok9m/74542198885.pdfIn PDF document text
    • http://ndt-tl.ru/upload/file/tenameradafuleditufazolog.pdfIn PDF document text
    • http://qtjdb.com/UploadFile/2021/05/23/file/20210523_191429_158.pdfIn PDF document text
    • https://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/b3512cb60e71fc8bd9544837add5a2c4/82944073190.pdfIn PDF document text
    • http://language-coach.pl/uploads/files/41873630074.pdfIn PDF document text
    • https://nnkcreations.com/userfiles/file/xazapiraritaxozipetu.pdfIn PDF document text
    • https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/6efc5b72269b003799df27a696fcfdbb/tapawawivov.pdfIn PDF document text
    • http://jedwines.com/cmsCart//upload/file/8421671358.pdfIn PDF document text
    • http://doctour.hu/uploads/ckfinder/userfiles/files/bekixupexakok.pdfIn PDF document text
    • http://shuswapladystriders.ca/userfiles/file/bifejelizapesuwure.pdfIn PDF document text
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/160712a14813e8---pamojenobi.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/112919b19198a4a2d0b344b652858b49/lijabibebosanolutaras.pdfIn PDF document text
    • https://aradmissions.com/ci/userfiles/files/fegurikovuruzovebo.pdfIn PDF document text
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/160982036e3f45---minexapodabuzizin.pdfIn PDF document text
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/160858c0739f75---83777540280.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/16080072ab6693---kosatun.pdfIn PDF document text
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16077a871166c2---69162787550.pdfIn PDF document text
    • http://win-sonic.com/kida2018/ck_imgs/files/xepatogizexagegosi.pdfIn PDF document text
    • http://www.biotanika.pl/upload/file/kopabarodas.pdfIn PDF document text
    • https://namhunglogistic.vn/site/files/51421993688.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=plant+pathology+multiple+choice+questions+and+answers+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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010c72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C72 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00012483.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12483 16140 bytes
SHA-256: 00b1f632e8afe72716c8bcdb76b7901b56c060d1dc0f96f3f5c1b8373b85735b
font_02_sfnt_off000139fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139FB 17912 bytes
SHA-256: af048b38282911ce501f87a3712f9459174510f0c96c548047280dec71dac361
font_03_sfnt_off00016909.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16909 11512 bytes
SHA-256: 849875db45c40a6eae3b53fc2f0f32e09c763773d5d030cae07f43f6636b95a9

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