Malicious PDF — malware analysis report

Static analysis result for SHA-256 9212f4e09b605687…

MALICIOUS

PDF

46.3 KB Created: 2020-10-26 02:27:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: dab5e1864415fc04fe37c4024d084790 SHA-1: 21a63d68f804dd4cec62086f493fb609bdc8352a SHA-256: 9212f4e09b605687cb0ece3578794bb985d8517135ab3685dab6673900516c52
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/pify?keyword=2020+toyota+rav4+xle+owners+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370280/normal_5f8921fd44221.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379049/normal_5f8b12c1867ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405190/normal_5f96013f2faaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383923/normal_5f90c8758af2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369504/normal_5f9206cccdffc.pdfIn PDF document text
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/kidilamag-jigajojeka.pdfIn PDF document text
    • https://tenikekiso.weebly.com/uploads/1/3/0/7/130775729/c93ce9fbd32c66d.pdfIn PDF document text
    • https://kizekusoviwo.weebly.com/uploads/1/3/1/4/131453028/fefulipumofegevukudi.pdfIn PDF document text
    • https://firerokuk.weebly.com/uploads/1/3/1/1/131164187/4500422d60e37f.pdfIn PDF document text
    • https://zozolexiwu.weebly.com/uploads/1/3/4/3/134343356/6828864.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366313/normal_5f872859471da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372371/normal_5f9358f1bdd95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392462/normal_5f95f93dc7344.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007009.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007009.bin)
    • https://uploads.strikinglycdn.com/files/628838af-4710-48f3-aba7-ceb154dd8808/wudubifiratiji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8558daf-990b-4fad-ad91-da444bbeddab/58550644769.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd775b5a-5d65-43ef-ae59-66964f7554ce/practice_of_the_presence_of_god.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5dd268a-aec6-4410-a696-e0115fe5a7ee/rululivo.pdfIn PDF document text
    • https://s3.amazonaws.com/bivanud/machine_learning_algorithms.pdfIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/palmistry_full.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/jolaninewabisafixonetolir.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/21473945273.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/come_si_fa_l_analisi_logica.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 extracted file (font_00_sfnt_off00007009.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007009.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7009 5420 bytes
SHA-256: 053c26d591fe05d53558608cb8dca61c59312925efefa8076050778bb172676c
font_01_sfnt_off00008271.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8271 12240 bytes
SHA-256: deddbc4a374de88083bf1998e75c126d0618ddda93919d5cf3a98e8bd9a0a40b