Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ce801d2389ad4d3…

MALICIOUS

PDF

84.2 KB Created: 2021-09-13 03:27:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: da7373d53abeafcf4ffd6605f1ce64f2 SHA-1: 69961b23d3c6ccd3cafefe076d65f6e2ef25175a SHA-256: 1ce801d2389ad4d3e2f2bd0e977fd38a0f3044956a40597549b0cff4ce861397
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The document contains a link farm pointing to numerous domains, including compromised WordPress sites, which are likely used to distribute malware or conduct phishing attacks. The presence of a URL with 'clash+of+royale+free+gems+generator' suggests a lure for popular game-related scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://drafthe.ru/uplcv?utm_term=clash+of+royale+free+gems+generator PDF link annotation
    • http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613a75908c52e---91410163199.pdfIn PDF document text
    • http://electriccityusa.com/images/fck_uploads/file/85519120490.pdfIn PDF document text
    • http://kkc1.org/htdocs/cljr/data/files/kavatosije.pdfIn PDF document text
    • http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e948483c73---jekomuronoruvogefavi.pdfIn PDF document text
    • http://mu-rrrc.com/userfiles/file/kemimubevopixagaxinabupoj.pdfIn PDF document text
    • https://mtestbd.com/assets/uploads/files/45216685206.pdfIn PDF document text
    • http://newgoodluckcrane.com/admin/uploadfiles/file/25665095697.pdfIn PDF document text
    • http://wolfpackbasketballacademy.com/content_docs/fopumigotiporuzegedomek.pdfIn PDF document text
    • http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135e3ea1ffe5---mutazilofanu.pdfIn PDF document text
    • http://www.jindatunnel.com/up_files/file/patuwulegozotododiji.pdfIn PDF document text
    • http://dolphinegypt.net/userfiles/file/bitiwipe.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b1b3472c19---91879571886.pdfIn PDF document text
    • http://jainfarms.com/uploads/ruroropupupegizuseki.pdfIn PDF document text
    • https://mancomunidadvaldizarbe.com/userfiles/files/nalikevovizowoza.pdfIn PDF document text
    • https://emenu.hu/editor_up/12196378066.pdfIn PDF document text
    • http://autoscuolemontagna.it/userfiles/files/vutofiredefinagako.pdfIn PDF document text
    • https://mallorcaboom.com/res/wysiwyg/file/tigorexamamivatemav.pdfIn PDF document text
    • https://lufty.cz/UserFiles/files/52342093760.pdfIn PDF document text
    • https://khambenhxahoi115.com/images/files/bovupawawipiki.pdfIn PDF document text
    • http://runhouchem.com/upload/files/fajogozodukopafaguwowuve.pdfIn PDF document text
    • http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/161393a9d899b3---gerivosemesimilalud.pdfIn PDF document text
    • http://aapltd.net/userfiles/file/tedikaxexepuzis.pdfIn PDF document text
    • https://www.tunnel.de/files/uploaded/file/91335802916.pdfIn PDF document text
    • http://luluscafeonline.com/uploads/files/53512923693.pdfIn PDF document text
    • http://thcsnguyenvanhuyen.hoaiduc.edu.vn/ckfinder/userfiles/files/jofugovuxojonaxipozipume.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_off0000e39b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE39B 17848 bytes
SHA-256: 63896206e78a5bddffb7fcf4d115600a2b5d4d209c1be8458c7c1126a9339dcb
font_01_sfnt_off00011267.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11267 10716 bytes
SHA-256: 2b8c57d65b7222321ecd456c22296febd78862495babe41bcf975e505106e8e8
font_02_sfnt_off00012aeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AEB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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