Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6f24fca22da8768…

MALICIOUS

PDF

59.0 KB Created: 2020-10-29 04:32:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 0b94003cc90a8509dc067aabb8f3a5c4 SHA-1: 3ccce6979cf03a9de816837fedda3b8230e25aaa SHA-256: a6f24fca22da8768602b9c6dea274e2485649f5118a2c69c327f7ee31b1c0638
164 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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/aws?keyword=florida+statutory+interest+rate In PDF document text
    • https://pepisukuwen.weebly.com/uploads/1/3/1/6/131606293/pitafakaxawo.pdfIn PDF document text
    • https://rowurasivove.weebly.com/uploads/1/3/4/3/134357219/eeff279779.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393033/normal_5f915bb50f6cd.pdfIn PDF document text
    • https://vuxilimibipemop.weebly.com/uploads/1/3/1/4/131453056/fufirasabareguxil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383566/normal_5f8ba8c13a5f7.pdfIn PDF document text
    • https://biwomewiwuxe.weebly.com/uploads/1/3/4/1/134131409/9388373.pdfIn PDF document text
    • https://lituveso.weebly.com/uploads/1/3/4/3/134362288/soxemanenuduk-lajixafumexusoj.pdfIn PDF document text
    • https://fukoxifixe.weebly.com/uploads/1/3/4/4/134460993/sugoxajimak-mowimez-mevuziwipusukal.pdfIn PDF document text
    • https://jarapitoxedomel.weebly.com/uploads/1/3/1/4/131437170/manar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414161/normal_5f9590e6bbfac.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/wogiselaruto-nokage.pdfIn PDF document text
    • https://tidemipevu.weebly.com/uploads/1/3/0/7/130740592/ec092f50519.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000a9e9.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000a9e9.bin)
    • https://uploads.strikinglycdn.com/files/cce5474e-4dde-4764-9751-df9fb2c5e53c/jbl_charge_4_release_date.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/sonesekebolujojupog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/154bd3d7-4f3d-4bba-9fa9-b3fc8ac913d1/zeziredetisidalefon.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/toefl_sentence_structure_test.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e4fb3c2-5d70-4aa1-9bd3-5137c6dbec98/kixirofunawoxurum.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_off0000a9e9.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a9e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9E9 4876 bytes
SHA-256: 1551b118583436d660d0a145cc57333e9edabf47ffe3542a058308638f3a3980
font_01_sfnt_off0000ba90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA90 10780 bytes
SHA-256: 54d6e643196cf13a93c5cba9450950dba9df1f03aacb50345e9af67c68f16697