Malicious PDF — malware analysis report

Static analysis result for SHA-256 5eee01b2fb3a6711…

MALICIOUS

PDF

182.7 KB Created: 2021-07-03 06:12:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5ad307e34925d3581be2ee8fe7c7af42 SHA-1: bc77fa03e332255b67ac0bfb9b7d1ffb85b29826 SHA-256: 5eee01b2fb3a67118f9e27e53b439e5bbb4ea69fa13ef8b8df40a13ad5e194a8
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It functions as a link farm, containing numerous URLs pointing to compromised WordPress upload directories and other disposable hosting. These links likely lead to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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://churchtextile.com/userfiles/file/bemuguvo.pdf
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a461d6be25d---ranarojalirifate.pdf
    • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160850d8aed11f---lonuvedipesijotafa.pdf
    • https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609733484fd2b---64949130377.pdf
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/16090d2e6cda99---45836556235.pdf
    • http://veterinariomauracotti.it/userfiles/files/28078997542.pdf
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a84ea33ffcb---93414782822.pdf
    • https://www.focus.mu/wp-content/plugins/super-forms/uploads/php/files/b72085bbb504d57cf77ab43a222d6804/32865018999.pdf
    • https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/a9he6bsda2gdaktgs5077u5g22/41631165263.pdf
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8af0d5f595---43724649994.pdf
    • http://iworking.vn/uploads/files/xoselasijulir.pdf
    • https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608bb3a121331---xuvomemadibetevomoneralal.pdf
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160891836b1365---gegob.pdf
    • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160711d2fe23d3---17828297028.pdf
    • http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a6d845415a7---31437015595.pdf
    • http://designbeginnings.com/upload/file/16218998764.pdf
    • https://belloverde.net/emailer/file/33473238347.pdf
    • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/4q9t70km0n4a955vu7frvf02sb/42221782535.pdf
    • http://namuvaldymas.lt/userfiles/file/reluzufejewapowujikibovof.pdf
    • http://haozuowenwang.com/imagefiles/file/42775614510.pdf
    • http://kondicionery-vidnoe.ru/upload_picture/file/69269189941.pdf
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afe01d1fc7a---81524420249.pdf
    • http://staging.impactredevelopment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c887f813d3---40202699022.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=calculus+thomas+11th+edition
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00025c3e.bin
9554b413b28b5cd4d044f0c64a587154765c95013f368a4b5cdbb019ff8172a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25C3E 1724 bytes
font_01_sfnt_off0002654a.bin
5521a71b0acc6295cf1cace3ee884c7b1b961d2cf1f2ef921c1f623847d1d7d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2654A 20068 bytes
font_02_sfnt_off00029a6d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x29A6D 16792 bytes
font_03_sfnt_off0002b284.bin
e27033217259d625c209eb91317b08b7239f089f7d846435d48063d1f6fd7873		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B284 10716 bytes

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