Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0dfab99d245a74e…

MALICIOUS

PDF

41.5 KB Created: 2020-10-27 03:43:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 2fd1b42c29c41217ddc0df738f04fdad SHA-1: b7c02acbe26314110f59714f5f12a16eeb8d99f7 SHA-256: a0dfab99d245a74e81d028a66fadddf269157f74ec40848d1888e291f41673bb
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://ttraff.link/pify?keyword=sergio+mendes+and+brasil+66+fool+on+the+hill In PDF document text
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/5010517.pdfIn PDF document text
    • https://tekegalesi.weebly.com/uploads/1/3/0/7/130740489/5ed314afbc5a7a.pdfIn PDF document text
    • https://kagilovudugavap.weebly.com/uploads/1/3/1/1/131164538/kalavo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387433/normal_5f8f90b41fbaa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367287/normal_5f89a47c68ae8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391317/normal_5f971459ae911.pdfIn PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/zipufag.pdfIn PDF document text
    • https://xoraxabaxid.weebly.com/uploads/1/3/2/6/132682630/65baefa75f437a6.pdfIn PDF document text
    • https://kilejotiwig.weebly.com/uploads/1/3/1/4/131406519/d32ce8.pdfIn PDF document text
    • https://dozasasakebo.weebly.com/uploads/1/3/1/1/131164234/b016b2f6764328f.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/jolon_koxuzozudanik_makilitinami.pdfIn PDF document text
    • https://ziwoleraxen.weebly.com/uploads/1/3/4/3/134385658/67533.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/7665c.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/rajojul.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005d47.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005d47.bin)
    • https://uploads.strikinglycdn.com/files/17891633-504a-4547-aab4-fb5d5458ca12/73998673796.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c0383d4-d73c-4030-9f80-81df8f840632/22994330499.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8abda614-8f89-4a9f-bdd0-5403267cf664/gopovoragaxas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61717266-a0bc-46fa-a32a-3d9cea6b8a94/motadatezilepe.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/90906644113.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/lv_pet_insurance_claim_form.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/31735893907.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/zegezimorotof.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/pdf_file_opener_free_download_for_pc.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_off00005d47.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D47 5716 bytes
SHA-256: 9a0479ebee138dfeac3bb8fe3f1fb1ec4742843bb7646c1f55df0712f7063ec5
font_01_sfnt_off00007084.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7084 11512 bytes
SHA-256: 46686cede846cac691a1d77c7c62987d89d5bc50e44524480c241042870545b1