Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e0df1181b9238d9…

MALICIOUS

PDF

76.6 KB Created: 2021-09-08 04:00:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 8ae6e5ae6fca3569e3be693428eaa23f SHA-1: 94600a1f70e841067f7897a0fc74554307f0cabe SHA-256: 0e0df1181b9238d963db172cd457304c830493b0e68504035b0be58d2c59f5a0
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to compromised WordPress sites, suggesting a link farm designed to host or redirect to malicious content. The presence of these links and the overall structure indicate an attempt to deceive users, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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 http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079a90ed5c90---12298912348.pdf In PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/160765b26c9acc---walejozumuga.pdfIn PDF document text
    • http://worshipedia.net/sites/default/files/file/mimorovixopuliti.pdfIn PDF document text
    • https://moderator.lt/components/com_mijoshop/opencart/image/data/files/tidikuvivaliwewisa.pdfIn PDF document text
    • http://reicar.dk/userfiles/file/figajakefopejawe.pdfIn PDF document text
    • https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/epu9atuevjo122837hl3bhpmo0/ribasovutuw.pdfIn PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f218e85444---zesapafafafo.pdfIn PDF document text
    • http://math-talk.kr/wp-content/plugins/super-forms/uploads/php/files/fh4ldq8fbkdotupqvonrev1oht/10173509001.pdfIn PDF document text
    • https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/3750157162d4145cf5f38311fd12204f/29642530908.pdfIn PDF document text
    • http://dribblebar.pl/userfiles/file/50940462487.pdfIn PDF document text
    • https://www.citysecurity.org.uk/wp-content/plugins/super-forms/uploads/php/files/7nk5gvj2agls588r6o7ns53jts/38726987408.pdfIn PDF document text
    • https://www.llgnjinc.com/wp-content/plugins/super-forms/uploads/php/files/040330010c69ebca54fa9499e1993772/jalorigefud.pdfIn PDF document text
    • http://castrolmintabolt.hu/images/upload/file/lagikusebakixuluderafo.pdfIn PDF document text
    • https://brakos.it/file/bifagelikokisukalex.pdfIn PDF document text
    • https://sf-tfi-pgu.uz/wp-content/plugins/super-forms/uploads/php/files/034cd85e31178ce346a07e250c539db9/fepido.pdfIn PDF document text
    • https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/066980f9cd02a3e0db0ce0858d42f9ca/74083874648.pdfIn PDF document text
    • https://btsmstlucia.com/atomicsteps/upload/userfiles/file/tuwarerobusupesen.pdfIn PDF document text
    • http://www.ambredore.com/wp-content/plugins/formcraft/file-upload/server/content/files/160983feb9c969---kawenikunaw.pdfIn PDF document text
    • http://nfrostov.ru/upload/files/91055720551.pdfIn PDF document text
    • http://mesterek.net/tmp/93202157415.pdfIn PDF document text
    • http://www.solarwindependence.com/ckfinder/userfiles/files/nikesunaxuwamusoxuruvifav.pdfIn PDF document text
    • https://inoxquochoang.com/app/webroot/files/images/pages/files/42059755488.pdfIn PDF document text
    • https://chiuman-hk.com/images/file/mejirabewitabezukuvavuwog.pdfIn PDF document text
    • https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f147a26687---22517472484.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=quando+quando+michael+buble+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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c3df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3DF 10964 bytes
SHA-256: d9764a8f5f9a211d677632d20ab1ef228cdfede36f51600b35767893b9dc59cd
font_01_sfnt_off0000dc9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC9D 18884 bytes
SHA-256: 63fff6cfeee1bfd7b62e069f6fea3acccc885fbcec4c8db203c46fc49af699e8
font_02_sfnt_off00010d28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D28 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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