Malicious PDF — malware analysis report

Static analysis result for SHA-256 30ad769f7366ba04…

MALICIOUS

PDF

72.8 KB Created: 2021-10-04 23:01:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 32208f270520320232a8e9de39c45e5e SHA-1: ef076548819ef18b8dafae510698b700a64c675d SHA-256: 30ad769f7366ba045114a9775c9854561e8f5901333826339df79db66215e839
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many hosted on compromised or disposable domains, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of malicious redirection tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9827

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=the+royal+arch+its+hidden+meaning+pdf PDF link annotation
    • http://sinching.com/uploadpic/files/202110022355196046.pdfIn PDF document text
    • https://sindonis.com/userfiles/file/midalasakisulelovipi.pdfIn PDF document text
    • http://rajskiewakacje.pl/userfiles/file/fimenujufawisaja.pdfIn PDF document text
    • https://www.speeddating.lt/speeddating/ckfinder/userfiles/files/kezebusolipixaperat.pdfIn PDF document text
    • http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1614dd0705ef46---xabibepolixutafibesu.pdfIn PDF document text
    • http://www.dean-cpa.com/files/adminpic/file/5493721130.pdfIn PDF document text
    • http://gr-chem.com/upload/files/52647999473.pdfIn PDF document text
    • https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/a4289c7250be59f37595706e78b0ea48/zikokemibivutavifagezufe.pdfIn PDF document text
    • http://monikaknoblochova.com/userfiles/file/10174072902.pdfIn PDF document text
    • https://dm288.rs/slicice/file/fobekupafejeguvokun.pdfIn PDF document text
    • http://pappteam.hu/userfiles/file/88372246754.pdfIn PDF document text
    • http://aromaonly1.com/yamituki-n/uploads/files/45720110523.pdfIn PDF document text
    • https://nepaltrekkinginhimalaya.com/assets/userfiles/files/65088663111.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/tauemck75i3si6b4i97sr6bl65/gevibonetejasapumoguv.pdfIn PDF document text
    • http://dostrojar.sk/UserFiles/file/59754221558.pdfIn PDF document text
    • http://brilliantsolarpaneling.com/userfiles/file/lofipo.pdfIn PDF document text
    • http://www.wiz-fac.com/uploadImg/file/36443758953.pdfIn PDF document text
    • https://www.thic.net/plugin/ce1/ckfinder/userfiles/files/13940445747.pdfIn PDF document text
    • http://alliance-ic.ru/uploads/file/nerupajetobeweniz.pdfIn PDF document text
    • https://www.3dreamchurch.com/wp-content/plugins/super-forms/uploads/php/files/18bc28da20740da45f9b3911ef68d4a3/16773858288.pdfIn PDF document text
    • http://autobedrijvenindex.nl/images/uploads/jopojodezidi.pdfIn PDF document text
    • https://valubil.com/public/uploads/cms_file/cms_files/81384108154.pdfIn PDF document text
    • http://besttailor.info/ckfinder/userfiles/files/95482192468.pdfIn PDF document text
    • http://tapestry.cz/images/file/files/vadosonojatewaxavelure.pdfIn PDF document text
    • https://simondaulte.com/ckfinder/userfiles/files/dobebaxajasi.pdfIn PDF document text
    • https://pt-olympus.com/contents/files/kuxox.pdfIn PDF document text
    • https://proxus.nl/file/kodazibanemevure.pdfIn PDF document text
    • https://sanagustin.cl/files/ralazulezajupeki.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_off0000b90e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB90E 16704 bytes
SHA-256: 1d990fac724a414e36fefbc8c9e28f63d783b04453ef5fcb155dc659f5b5f34e
font_01_sfnt_off0000e398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE398 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000fbaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBAF 11144 bytes
SHA-256: 78664b61f75be1d99962b1c0d403d3165eb6f31537574c7dcbc953d07c73380d

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