Malicious PDF — malware analysis report

Static analysis result for SHA-256 f487d3af991019da…

MALICIOUS

PDF

71.3 KB Created: 2021-06-27 02:44:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 56456d26ff288167fc8034b02462a1ce SHA-1: 1a2826f2dad5c5aaf7873b96d1fe423fd92bf3bf SHA-256: f487d3af991019dac2c75e1ad7d5fdc791e88b125c597b9d52af32eb82d575cf
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to compromised websites or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. ClamAV and ML classifiers also flagged this file as malicious, specifically as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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://irlanc.ru/uplcv?utm_term=far+from+the+madding+crowd+pdf+download PDF link annotation
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160833dc415179---nufelezipufekil.pdfIn PDF document text
    • http://artside.org/data/temp/file/xizukejulusav.pdfIn PDF document text
    • http://htwy.com/upload/file/fewuvozakenakoviz.pdfIn PDF document text
    • https://butchercurnow.com/img/shop//contents/narokejawuzaroles.pdfIn PDF document text
    • http://adamlegal.com/userfiles/file/43352292682.pdfIn PDF document text
    • http://fujavietnam.com/images/Download/94656866875.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/9plbtffcgm2k3o8plnm0cf73r9/dojureka.pdfIn PDF document text
    • http://nomaquito-travel.com/editor-images/80987790542.pdfIn PDF document text
    • http://al-bandak.com/userfiles/file/fozapuxulemavet.pdfIn PDF document text
    • https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/dd919075f52db32094081d9f256602d1/xazebaguwebiwefonat.pdfIn PDF document text
    • https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/clt2mkvpa8tvd7vgmh1hmb7e16/wejuwofo.pdfIn PDF document text
    • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b9bd50621dd---8224692851.pdfIn PDF document text
    • http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/294b109e01620d565f46396aaaae0f26/58298603004.pdfIn PDF document text
    • https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/qp9909pl62f7ipbg8mv38ad3gb/84444930440.pdfIn PDF document text
    • http://hghs61.com/clients/9/98/9814c5f28b4e93efd1f74733a9fd6b0f/File/galifozajiruxu.pdfIn PDF document text
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/5brpa5u2fida0vbuf8f2cbf304/4891048189.pdfIn PDF document text
    • https://orig-shop-gsm.ro/ckfinder/userfiles/files/sodulezepuriposurex.pdfIn PDF document text
    • http://vankouwenenmastop.nl/UserFiles/file/bikifepolonexixutumufare.pdfIn PDF document text
    • https://juhaszautovill.hu/userfiles/file/fixepujogenimamalikomij.pdfIn PDF document text
    • http://yuha.be/_files/file/fufodavokebub.pdfIn PDF document text
    • https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076cd8b8a288---kipedobifegawemonuwaveg.pdfIn PDF document text
    • https://alternativecarrepair.com/userfiles/file/lebubikuxixejebojij.pdfIn PDF document text
    • https://renesens21.com/ressources/upload/files/70878822174.pdfIn PDF document text
    • http://interel-rus.ru/test/sites/default/files/file/43988134557.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/881c108fe95d810187582c54e17907dd/17546444134.pdfIn PDF document text
    • 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_off0000b667.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB667 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ce7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE7E 10960 bytes
SHA-256: c0460554f4222f35b8b73af43ff3beb9c1c1ea7a6555eddaed473523f75c2497
font_02_sfnt_off0000e784.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE784 15708 bytes
SHA-256: 6e09eeb9d6096ebe325c91ccdabc5883893ee9057545f62619d457edc8610007