Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0bc1c72aabf63fe…

MALICIOUS

PDF

74.6 KB Created: 2021-06-09 13:41:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: dcaf2dbef5f178a1de8cba5e8e0e6ffb SHA-1: 6a67a02061755ae3a42a185df10cf34ecfa245fc SHA-256: e0bc1c72aabf63fedd37f5d37f66f3769306dce5b21032db5bd9a49b65970b28
206 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a link farm designed to redirect users to malicious websites, masquerading as an admission form. The presence of numerous external links on disposable hosting, coupled with a high ML classifier score and ClamAV detection, strongly indicates a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to lead users to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://mezovuduw.ru/123?utm_term=sydney+adventist+hospital+admission+form PDF link annotation
    • https://siganubamisibu.weebly.com/uploads/1/3/4/1/134108806/tesivagit_muwibem_manise.pdfIn PDF document text
    • https://luxaxila.weebly.com/uploads/1/3/0/8/130814132/8525918.pdfIn PDF document text
    • https://poperetaro.weebly.com/uploads/1/3/4/8/134893078/gales.pdfIn PDF document text
    • https://nebijuwako.weebly.com/uploads/1/3/4/3/134376342/9f95a9.pdfIn PDF document text
    • https://bedapidipofawif.weebly.com/uploads/1/3/2/7/132711979/sulip.pdfIn PDF document text
    • https://radunepik.weebly.com/uploads/1/3/4/6/134617153/5304113.pdfIn PDF document text
    • https://kukavixol.weebly.com/uploads/1/3/4/4/134485481/kikejejega_teral_fibafedanima_duxopuma.pdfIn PDF document text
    • https://zipixaxunisegon.weebly.com/uploads/1/3/4/6/134625234/22ac084b.pdfIn PDF document text
    • https://tedibijufu.weebly.com/uploads/1/3/4/6/134678634/xetixela.pdfIn PDF document text
    • https://gakatonigi.weebly.com/uploads/1/3/2/6/132681340/sarivawepem.pdfIn PDF document text
    • https://ditutemisa.weebly.com/uploads/1/3/4/3/134381329/mirubajikekega_zulajepu_winobabu_nejifefo.pdfIn PDF document text
    • https://wijejotuxaketuv.weebly.com/uploads/1/3/4/3/134338978/zojuvutekadusasexov.pdfIn PDF document text
    • https://balalowomave.weebly.com/uploads/1/3/0/7/130738893/93561b319fc7b.pdfIn PDF document text
    • https://venowogofopow.weebly.com/uploads/1/3/4/6/134611371/28456.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e36fc7f-5d49-4220-abd0-ae69f68e0be8/salit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6e66c0b-5f21-4f09-93a2-69f115b088b3/99370842855.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7d5e9fa-f510-42e8-af6c-1e13075528a6/zesefipafasivuzadikaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2dfab47-bfa5-4888-91cf-45a98e2adda2/which_of_these_is_not_one_of_le_corbusiers_5_points_of_modern_architecture.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b746d12d-d679-4bd8-9707-4ddbdeb7b710/91759511724.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4102a11-1879-4048-9efd-24ac5b3a3fae/kogemalijuvipuno.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/344e3c80-cbe3-4ae9-bf01-274958d122e6/15061269199.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE373 5544 bytes
SHA-256: 28b722888f0c882db37d316e32ac625891132de0a66af05e25491240186d24de
font_01_sfnt_off0000f633.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF633 11364 bytes
SHA-256: b092fc512b19129df637df8295eda797f47ad17e0644a6cfb88e7d939e5081b7

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