Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ed907037d3abfb1…

MALICIOUS

PDF

81.5 KB Created: 2021-04-01 19:12:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 3dfe3469297c51ec2ce2b9f045bf5055 SHA-1: 13ba9d21775a8e69c89e8e8f93bf6328f8a6e690 SHA-256: 6ed907037d3abfb1ec3c0e94631793fc0695def149c6828144c2d80c7d0738e9
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1566.002 Spearphishing Link T1059.007 JavaScript

The PDF document impersonates Amazon, a tactic commonly used in credential phishing campaigns. It contains multiple links to disposable hosting and redirectors, including one that leads to a PDF file hosted on weebly.com, suggesting an attempt to lure users into providing sensitive information. The ML classifier strongly indicated maliciousness, and the presence of callback phishing lures further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://jerexibim.weebly.com/uploads/1/3/4/6/134654770/zigizikidajelimox.pdf.
  • 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/aws?utm_term=how+do+i+reset+my+yale+lock+code PDF link annotation
    • https://jerexibim.weebly.com/uploads/1/3/4/6/134654770/zigizikidajelimox.pdfIn PDF document text
    • http://center-san.ru/wumasoponadudifamyleku.pdfIn PDF document text
    • http://dovazevenujo.22web.org/19109591093.pdfIn PDF document text
    • https://jusopara.weebly.com/uploads/1/3/2/6/132681150/kivuvix_timubufozuwa_guwavub.pdfIn PDF document text
    • http://uscreditcheck.info/an_inspector_calls_scene_2_summaryqjkdu.pdfIn PDF document text
    • http://top-shop-store.website/fatulec6obs.pdfIn PDF document text
    • http://mavpa.fun/lukufikekitokixiluxufu65u26.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tonisefoteka/great_gatsby_vocabulary_words.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3891c80-bff1-41d4-ab32-05d3d2d2ef5a/tippmann_a5_e_grip_board.pdfIn PDF document text
    • http://wawopuviginase.epizy.com/96383272693.pdfIn PDF document text
    • http://xasakekom.epizy.com/anemias_clasificacion.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/define_development_planning.pdfIn PDF document text
    • http://wutagokavejeve.rf.gd/fused_sentence_and_comma_splice_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/mujesogi/tesis_doctorales_en_administracion_de_empresas.pdfIn PDF document text
    • http://jujadax.rf.gd/46741613375.pdfIn PDF document text
    • http://kepirodineloga.epizy.com/is_vicks_baby_rub_good_for_congestion.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/389b954a-1365-427e-bd6e-4ee0de2d5be8/98226853177.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a317b8f-02a9-4e32-8179-1133e293a4eb/vulosujejuzikotirosumaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54631cf1-5a02-4196-878a-9a3bd648e30c/david_eddings_pawn_of_prophecy_ebook.pdfIn PDF document text
    • http://zibemusisuvimal.rf.gd/gesture_controlled_robot_using_accelerometer_project_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/429471dc-bc9c-4edf-be86-69b2d973de24/why_is_my_coleman_pool_pump_not_working.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_off00010266.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10266 5304 bytes
SHA-256: 8e5381ab02f56d0c0130b45125ae543411724d12bd7463d951c22e1be30a557c
font_01_sfnt_off0001146e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1146E 10532 bytes
SHA-256: 48a5f43f93a3ab0ccf5ce08d3df163cdcf60c35e4cc326d48646c68691ec8731