Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b275989ae198ef0…

MALICIOUS

PDF

76.3 KB Created: 2021-03-05 06:05:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 42451f448973aa8a45983e580d9cebdd SHA-1: 022aeb2fb91909758b0416240359c96bd239683b SHA-256: 2b275989ae198ef09eba9575d3c341f416e2634875b36a016a564eb4156c7f96
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • AcroForm button with action trigger low PDF_ACROFORM_BUTTON
    PDF contains a /Btn form field together with a SubmitForm/URI/Launch/JS trigger — this is the building block of fake 'Download' or 'Open' button overlays used in PDF phishing lures
  • 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://baarspo.ru/award?keyword=the+crown+season+1+episode+8+filming+locations PDF link annotation
    • https://zipakodexosif.weebly.com/uploads/1/3/5/3/135344546/binisuwokunizeponepi.pdfIn PDF document text
    • http://xegazinijitup.mywebcommunity.org/45956447279.pdfIn PDF document text
    • http://tepoparupomo.medianewsonline.com/prodigy_hegelian_dialectic_the_book_of_revelation.pdfIn PDF document text
    • https://cdn.sqhk.co/nokotadi/idhjjjR/jawaban_puzzle_box_level_13.pdfIn PDF document text
    • http://bafiselavanebep.mywebcommunity.org/wovinefekixugeditapukabeb.pdfIn PDF document text
    • http://mekujoviwe.mypressonline.com/mepudewekimajufuso.pdfIn PDF document text
    • https://cdn.sqhk.co/samidabaxik/Un1rzfn/free_pop_radio.pdfIn PDF document text
    • https://rorujazikuje.weebly.com/uploads/1/3/1/3/131379225/055c1694f66.pdfIn PDF document text
    • http://gifinibufenatar.medianewsonline.com/98583118098.pdfIn PDF document text
    • https://tajurasexir.weebly.com/uploads/1/3/1/6/131606020/7e5547a93d0b1.pdfIn PDF document text
    • https://tirilume.weebly.com/uploads/1/3/4/8/134886795/6146720.pdfIn PDF document text
    • http://zonuvak.medianewsonline.com/proving_congruent_triangles_worksheet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/aec7841a-05c6-4de4-9019-1f30b9940812/rukonamulodetuxoverib.pdfIn PDF document text
    • http://tiredosutozol.atwebpages.com/how_to_draw_realistic_portraits_with_pencil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/368ca065-d86c-4851-991a-e23885e753e6/40435827927.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aab321bd-da7d-46ce-bf27-3369ce8da929/bisilonavurodeta.pdfIn PDF document text
    • https://c931c956-7f53-4e4e-96dc-27d7f003ba63.filesusr.com/ugd/b80c10_42135d0c88234d0e90649fbb52254468.pdf?index=trueIn PDF document text
    • https://6cdf8c5e-36a0-4b6d-987f-32d3d50030cd.filesusr.com/ugd/3c2e2e_af6a28096cea44c9a1726e5eadfc5f77.pdf?index=trueIn 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_off0000eb2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB2D 5856 bytes
SHA-256: 0191ae3f3626379b865e6a25b232804ea9a24e875fd4984fb994e13f8b5ca33f
font_01_sfnt_off0000ff0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF0E 10752 bytes
SHA-256: 3f84f5dc6f5c96bde2c6d21b61cb437280bc5f67c78efec07ab54b6ec6d2f137

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