Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee9fadc02a29dfd6…

MALICIOUS

PDF

74.6 KB Created: 2021-08-30 16:45:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 75f74c796f946cb420cd66d9accebe1a SHA-1: e0b6ccdf0bcdc84c9912fa99e819c992f1bd2b34 SHA-256: ee9fadc02a29dfd65a1355f05b5e763dd30c064e99f7a481f028c2ea91ae72b1
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to websites hosted on compromised CMS platforms or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution through these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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=need+for+speed+no+limits+apk+obb+download PDF link annotation
    • http://kerekagy.hu/UserFiles/file/zafesuxag.pdfIn PDF document text
    • http://jhdljz.com/userfiles/file/1628516628.pdfIn PDF document text
    • https://www.analfissur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072180cb7fa0---wagaduxezazopavutel.pdfIn PDF document text
    • https://fallsplat.se/file/fowakafoxuw.pdfIn PDF document text
    • http://mdc.ir/ckfinder/userfiles/files/20856990203.pdfIn PDF document text
    • https://mkontakt.pl/dat//file/fuxarelukofawawap.pdfIn PDF document text
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/s38iu7ciu4d3rc0lkkvs0bno20/98179257405.pdfIn PDF document text
    • https://kme.pl/global/app/webroot/uploads/file/16251485831057.pdfIn PDF document text
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090e9ac340fc---62524069379.pdfIn PDF document text
    • http://louisefarmersmith.com/admin/ckeditor/ckfinder/userfiles/files/nivisenazojojujoro.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a687d6a0c47---loruranuv.pdfIn PDF document text
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6f70b206a6---24079006812.pdfIn PDF document text
    • http://dc-42351dc5a6b3.prshots.es/uploads/userfiles/1629452629/files/vegaguf.pdfIn PDF document text
    • http://webbuilders.com/files/file/mumaxoserinatukowakifem.pdfIn PDF document text
    • https://rebel-guitars.com/wp-content/plugins/super-forms/uploads/php/files/837ac7a356d58b64faadc5bd9e203553/32501257307.pdfIn PDF document text
    • http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/160cff44963d4b---xadefupebuvemozutef.pdfIn PDF document text
    • https://hotelgaric.com/upload/datoteke/mowawolepofuponoz.pdfIn PDF document text
    • http://sanga.asia/userData/board/file/jimapexe.pdfIn PDF document text
    • http://crystalsteakandstogie.com/clients/1/1d/1dbb6d5698303b6304ae84622e226a19/File/bosuledu.pdfIn PDF document text
    • https://bagstyle.uz/images/file/lepokoxobefamojisuxu.pdfIn PDF document text
    • http://elosc.com/upFile/file///ITX202108171418296750.pdfIn PDF document text
    • http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/1610a0063854d3---40744646513.pdfIn PDF document text
    • http://kochamsushi.pl/UserFiles/file/rivonesanuliwixaguge.pdfIn PDF document text
    • http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b696919727d---kadotikimixarotukibaro.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_off0000c273.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC273 15544 bytes
SHA-256: eb877da14ae2a9380d74364d749ba7584c20eb3060e433fa3616116d20cb5ff4
font_01_sfnt_off0000ea81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA81 10952 bytes
SHA-256: 069b1fa1988849b210b112495763bb8182a01088e8078dca508614f0105fbf8a
font_02_sfnt_off000103b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103B3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1