Malicious PDF — malware analysis report

Static analysis result for SHA-256 39a1da858c76c75b…

MALICIOUS

PDF

81.5 KB Created: 2021-06-28 01:02:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: b51a75b16314f779a874053d1771cb9b SHA-1: 1da0b3eba5b07d24498ff34a2a12883dd1902980 SHA-256: 39a1da858c76c75b4d9f54322acda9c3bedb67c036cdc90c52f9e85351ae7919
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains a link farm pointing to numerous domains, many of which appear to be compromised WordPress sites or disposable hosting, suggesting a phishing or malware distribution scheme. The embedded URLs are designed to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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 https://drafthe.ru/uplcv?utm_term=if+i+lay+here+would+you+lie+with+me+lyrics PDF link annotation
    • https://sheenabusesandcoaches.com/userfiles/file/nepimigirobatidu.pdfIn PDF document text
    • http://zdrowejaja.com/Upload/file/jomiravorowobe.pdfIn PDF document text
    • https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/f2rjooouo98oc72ke932ba9058/korurepusi.pdfIn PDF document text
    • http://amphorabeautyclub.com/campannas/file/kuzutizazilog.pdfIn PDF document text
    • https://sikanderajam.com/Robinson/ckfinder/userfiles/files/4665636540.pdfIn PDF document text
    • https://vntdc.com/upload/fck/file/pugewizedonezijo.pdfIn PDF document text
    • http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16073e72616d7c---fubomorijo.pdfIn PDF document text
    • https://realestateconnect.biz/wp-content/plugins/super-forms/uploads/php/files/bacauefouelibpj2b1ks0lk6r7/79563458074.pdfIn PDF document text
    • https://rfcorporation.net/wp-content/plugins/super-forms/uploads/php/files/65ce41bc311bf877fd31e7139fe8019d/64423164205.pdfIn PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160825684e94b2---66809119481.pdfIn PDF document text
    • https://www.parkgest.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160cb9ffceac46---74537440123.pdfIn PDF document text
    • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b4e385bef9---92345311296.pdfIn PDF document text
    • http://ural-resyrs.ru/data/file/wogukevizumexovepe.pdfIn PDF document text
    • http://sghscsjamarai.org/guruhargobind/userfiles/file/puruvuwomubiwiwaba.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/283c0737b244cb5f1e991526848c96bb/xugarivu.pdfIn PDF document text
    • http://riskhedgetech.com/uploaded/file/119766639860922975d9c12.pdfIn PDF document text
    • http://connect-senior.ch/uploades/userfiles/file/95199142467.pdfIn PDF document text
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b8355f56387---giweluxekofago.pdfIn PDF document text
    • https://accuratesearch.com/userfiles/file/kupokisupepotutefis.pdfIn PDF document text
    • http://kleinschaden.expert/userfiles/file/19416894281.pdfIn PDF document text
    • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/0952e5c41b149f3f85c53b55093dc924/56744587235.pdfIn PDF document text
    • https://pharmnet.cz/ckfiles/files/files/13419430027.pdfIn PDF document text
    • https://aawyx.com/sites/default/imageuser/file/mobusa.pdfIn PDF document text
    • http://valifyrepapillon.com/clients/6/68/68e1c6a84db99a04c21676ff826d6e37/File/jigabipokajimoviribosone.pdfIn PDF document text
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/8810108b87f336ec5078fcf6be9bc583/81942174419.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_off0000d7a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7A1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000efb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB8 10888 bytes
SHA-256: a09026a435bccf1df23b1917a6668dc754571ac00f24e8688741c657dc8411a2
font_02_sfnt_off000108f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108F3 18148 bytes
SHA-256: 4ccb99baee99a521c50a854d689092aa85fccd866cdf273698538a2c12248318