Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a0098d1981d35d4…

MALICIOUS

PDF

79.0 KB Created: 2021-09-09 23:07:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 60992f2df94e41e56cc3cc9fb9a81ddb SHA-1: aea64abe948f3a8ddf5501d29adf1256e9314941 SHA-256: 2a0098d1981d35d4d829a11e2b33a52c1ae40046f6041153bdd0c704c3927501
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as a malicious PDF by ClamAV and an ML classifier. It contains numerous embedded URLs, with one heuristic identifying it as a link farm on disposable hosting. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://foulardfotografando.it/file/fupigolanijiwodojonugod.pdf In PDF document text
    • http://vlaamspatientenplatform.be/_plugin/ckfinder/userfiles/files/bubelupuxak.pdfIn PDF document text
    • http://www.cda.org.hk/ckfinder/userfiles/files/rivexupasebotowudavi.pdfIn PDF document text
    • http://stphilomenaonline.org/userfiles/file/51433468979.pdfIn PDF document text
    • https://wineart.online/userfiles/file/15060945297.pdfIn PDF document text
    • http://koreaseowon.com/ckupload/files/97584436750.pdfIn PDF document text
    • http://bytip.net/filespath/files/20210907202326.pdfIn PDF document text
    • http://agendatourvietnam.com/hinhanh/file/wazirasajofazakonujizovul.pdfIn PDF document text
    • http://serting.eu/userfiles/files/kuwamurawafowijesafogo.pdfIn PDF document text
    • https://sdudyogtechnologies.in/ckfinder/userfiles/files/66235379768.pdfIn PDF document text
    • http://www.eurosecurimed.com/ckfinder/userfiles/files/98094179371.pdfIn PDF document text
    • http://meta-min.com/files/74078863371.pdfIn PDF document text
    • http://safedoorsystems.com/cmsimages/file/19641041067.pdfIn PDF document text
    • http://balalajka.nu/media/74509802698.pdfIn PDF document text
    • http://union-montage.pl/userfiles/file/75466402899.pdfIn PDF document text
    • https://liepasmuiza.lv/userfiles/library/53984161393.pdfIn PDF document text
    • https://eravukappalpalli.com/userfiles/file/vawobajabedateku.pdfIn PDF document text
    • http://abwwilson.com/uploads/files/7123755125.pdfIn PDF document text
    • https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/161364ba24dfed---64885910395.pdfIn PDF document text
    • http://architettodrabeni.it/userfiles/files/piseliwon.pdfIn PDF document text
    • http://bydnjl.com/userfiles/files/84803155088.pdfIn PDF document text
    • http://superfasttv.com/uploads/files/pikewab.pdfIn PDF document text
    • https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/c3cee055de711a3abbb114da6ba48cba/rekutojabufukuz.pdfIn PDF document text
    • http://mimarathi.live/assets/ckfinder/core/connector/php/uploads/files/23196108410.pdfIn PDF document text
    • https://incoyun.com/calisma2/files/uploads/kaxebilixosun.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=2006+mustang+gt+for+salePDF link annotation
    • 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_off0000d238.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD238 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ea4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA4F 10876 bytes
SHA-256: bd586e35229532b5bdf6401223da6e49f6493b0e913fe2a97837dddd3b204c88
font_02_sfnt_off0001038b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1038B 16716 bytes
SHA-256: bd7e38a992d87a49896d953dba3d7d6994be2d85443b618a476b9ce6790397ed

Open this report in the interactive analyzer, or submit your own file for analysis.