Malicious PDF — malware analysis report

Static analysis result for SHA-256 989a9adb4547d7bb…

MALICIOUS

PDF

54.2 KB Created: 2020-11-08 14:42:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-02
MD5: 6d6ac1da27674e828165b9174479ba99 SHA-1: 80a0ee90ad038450ea390d2a4948c4ef513b192b SHA-256: 989a9adb4547d7bbe3ec3b949bda1452cd7e86b466689e5d73eee57b76c0491e
132 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 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://traffine.ru/aws?keyword=procera+memory+support+reviews In PDF document text
    • https://pepisukuwen.weebly.com/uploads/1/3/1/6/131606293/0fd65f3.pdfIn PDF document text
    • https://muwewixobajigu.weebly.com/uploads/1/3/4/3/134312624/5a97e2a74a2a1e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421957/normal_5f9e37192fef9.pdfIn PDF document text
    • https://zoxipunawogedo.weebly.com/uploads/1/3/4/2/134235683/1386623.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00009386.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00009386.bin)
    • https://s3.amazonaws.com/zamuriza/55270978685.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/carcinogenicity_studies.pdfIn PDF document text
    • https://tidesefotiku.files.wordpress.com/2020/11/bob_marley_complete_discography.pdfIn PDF document text
    • https://xegazatizuva.files.wordpress.com/2020/11/holt_mcdougal_psychology.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/2067936398.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ce9775a-8dad-4ab2-b10b-eabe6f1c82fe/75768186767.pdfIn PDF document text
    • https://bogenani.files.wordpress.com/2020/11/tonerakudariwatadasegu.pdfIn PDF document text
    • https://dudasituwet.files.wordpress.com/2020/11/2008_jeep_patriot_fuse_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36e0cb46-05d7-497d-b14a-3b5640546715/zataxaxuraw.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_off00009386.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009386.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9386 5300 bytes
SHA-256: 4f4827c4e2cbf1d599c6901a520f1fc17431c827f1180d5bb9a789bbcc075b86
font_01_sfnt_off0000a592.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA592 11296 bytes
SHA-256: a86f5b701ccec795b3b6b81cda76b78dd45795bb43ea2da7831d91f91774ca6d