Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e962f6ee2e1935a…

MALICIOUS

PDF

125.7 KB Created: 2021-07-01 23:49:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 1da49f75bf374fad1a038c5793544596 SHA-1: a57126d14d4d408582a97bb51b7e494c77ff4052 SHA-256: 1e962f6ee2e1935ad75c8d932618e6c2465924e8be2d7a6f6dd5a49ecca1ab91
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of multiple compromised CMS upload links and disposable hosting URLs points to a coordinated effort to host and distribute malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9635

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://huntic.ru/uplcv?utm_term=spin+%26+coin PDF link annotation
    • https://thinkhigh-tech.com/d/files/97218784488.pdfIn PDF document text
    • http://fashioncenterpoint.com/wp-content/plugins/super-forms/uploads/php/files/cdfe740b5fc29435b0f02bc75703c2fe/vijirusa.pdfIn PDF document text
    • https://mrmusicfoundation.org/wp-content/plugins/super-forms/uploads/php/files/9uu2pb7q7c8rb0h8jpkopknl8e/laroxekiwenajokaxos.pdfIn PDF document text
    • http://profisystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160705ef13269c---getoguwaxix.pdfIn PDF document text
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606f60ad6f287---botog.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/89fki70r3t313vevhdl3rrtbh2/gibides.pdfIn PDF document text
    • http://danielbushreunion.com/clients/41596/File/41467080605.pdfIn PDF document text
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c582340e6e2---regaxezunoboxivovirudab.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5bf9c43c42---kifiwuv.pdfIn PDF document text
    • https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bb5e0996908---bevusidosix.pdfIn PDF document text
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c95152ddf86---vesozusipoji.pdfIn PDF document text
    • https://elicopter-de-inchiriat.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16078e76bf1ec7---mudewexaputojowen.pdfIn PDF document text
    • https://binarbaidfabrication.com/public_html/userfiles/file/12705454115.pdfIn PDF document text
    • https://www.temsilcifirsatlari.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607086fd6e99a---komidagema.pdfIn PDF document text
    • https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/16604c2fd641a43ca568d9205cbcb9a1/35210414564.pdfIn PDF document text
    • http://upbfassadenbau.com/upload/file/14946237247.pdfIn PDF document text
    • http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b847d505a62---mamasujizofogudipogabu.pdfIn PDF document text
    • https://eitmedu.in/ckfinder/userfiles/files/25063367841.pdfIn PDF document text
    • http://alexandercdg.com/clients/36029/File/70630332961.pdfIn PDF document text
    • http://okwecare.com/usr/userfiles/files/lijorimapurabuzunolun.pdfIn PDF document text
    • http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/71hmrnug5p20mabe0g85cnbp2s/gumitobosipaxofigadexofaz.pdfIn PDF document text
    • https://teenvolunteer.org/wp-content/plugins/super-forms/uploads/php/files/990ee23ac910e1823290269db8702524/jefigijeboruxijis.pdfIn PDF document text
    • http://atdawnwelift.com/userfiles/file/96695606165.pdfIn PDF document text
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a1059280e0f---kapugemuwi.pdfIn PDF document text
    • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c76e4eb6bb3---81493672714.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00017ede.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x17EDE 29292 bytes
SHA-256: f42ab93cff79cc1c79bc7f6a6464d90653a26b9ce426ef2a7080ddd59efdb6bd
font_00_sfnt_off00011aa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AA8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000132ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132BA 33420 bytes
SHA-256: c45b8a1f665a4cd69a58e9c88b2262ff781c0e04aac2ce1a0c4ce4b9929c8675
font_03_sfnt_off0001b5a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B5A8 9488 bytes
SHA-256: 7f8c4c519346676442db450efb81cd97cdfbbc2835d93c8b91cdf702b5559622
font_04_sfnt_off0001c9fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C9FD 10000 bytes
SHA-256: 32d66769bf7495cb665fa836f4bc1a7b3f7cdec1f85e72bfbaef1c8f1826c980

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