Malicious PDF — malware analysis report

Static analysis result for SHA-256 e207d358744d49a4…

MALICIOUS

PDF

89.5 KB Created: 2021-07-02 02:01:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: c2eab61ead5a1b029b916a78fccf76b0 SHA-1: 31643b3a2cc887d01fbfe1d383aca08206dc0c6f SHA-256: e207d358744d49a45786749eefeb3a24777b0da2fe3a9aa722a5c30920f2444a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links to external websites, many of which are hosted on disposable domains or compromised WordPress installations, suggesting a link farm designed for phishing or malware distribution. The presence of ML and ClamAV detections further supports its malicious nature. Although no scripts were explicitly extracted, the PDF structure and URL patterns are indicative of malicious intent, likely involving the exploitation of PDF viewers or redirection to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://wastran.ru/uplcv?utm_term=painting+pdf+books+free+download PDF link annotation
    • http://busankid.com/webfiles/board/file///dutomelapikakotif.pdfIn PDF document text
    • https://solener.info/ckfinder/userfiles/files/xubikiboxanuleres.pdfIn PDF document text
    • http://www.thaiboat.net/image/upload/File/37052393223.pdfIn PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/srs36ptmr002fkbmpsnriqtutf/lupawojugat.pdfIn PDF document text
    • http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160708e75dbefc---pazelagafulixamoludano.pdfIn PDF document text
    • https://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/0109dc6412e9695fa304cc26bc27d222/51866689027.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/62502722058.pdfIn PDF document text
    • http://www.pzkexie.com/up_files/file/37245868990.pdfIn PDF document text
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/22412de3e6537ac2de8ad7bd32adf17e/70981470248.pdfIn PDF document text
    • http://aucoindeshalles.com/menu/file/buveporipuxugowurokekef.pdfIn PDF document text
    • https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/d56d6f04f9243d18c0408bc3582d17a8/97032107578.pdfIn PDF document text
    • http://orchid-daikanyama.com/userfiles/file/pupowakizoxinadewofakumud.pdfIn PDF document text
    • https://luminex.pl/upload/file/momutunido.pdfIn PDF document text
    • https://allcreaturesinc.com/files/files/vijevorufipelu.pdfIn PDF document text
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a19cd333b7f---vamorutojube.pdfIn PDF document text
    • http://www.mywil.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607c03f8dcab1---wadefuj.pdfIn PDF document text
    • https://toolsatool.com/userfiles/files/labitafizuluvezewerugani.pdfIn PDF document text
    • https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d178aecb49---kefevo.pdfIn PDF document text
    • https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/d20d7ee6e82047bca4bfbb8b1df52f1d/mewudepe.pdfIn PDF document text
    • http://winteringlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/pubafapevugezudo.pdfIn PDF document text
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ca528f262d3---90953792600.pdfIn PDF document text
    • https://www.deuba.info/wp-content/plugins/super-forms/uploads/php/files/3qtbbun68t6fe2q5103p8usep4/liparedopilosogef.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f902.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF902 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11114 17728 bytes
SHA-256: e79b5eaf6e7ab8942f1f48dff232293512139927a25ff16e8dc63607a73b3b83
font_02_sfnt_off00013f79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F79 10992 bytes
SHA-256: df92e372026c887a5b6db36236535a290a6833ef076e270af5fdfb74673a2fa4

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