Malicious PDF — malware analysis report

Static analysis result for SHA-256 1955f77342fb80db…

MALICIOUS

PDF

45.2 KB Created: 2020-10-25 03:12:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-10
MD5: 4b787f2eb7e1db1f512d1779f097dbbb SHA-1: cee68c1232410afb589f6ada0b0920c60d000dc6 SHA-256: 1955f77342fb80db016c8ee226c2ab2061a09deecbb733dfc1443dce278c538d
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.me/aws?keyword=acting+scripts+for+practice+solo+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4380869/normal_5f94682fd256c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368243/normal_5f8a4089b3851.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369494/normal_5f929e4d94d44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387040/normal_5f932b2295b28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384470/normal_5f942a03eade6.pdfIn PDF document text
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/6276840.pdfIn PDF document text
    • https://vekejuritikoj.weebly.com/uploads/1/3/1/8/131857631/wurogopijeza.pdfIn PDF document text
    • https://godadonalizubo.weebly.com/uploads/1/3/1/4/131437317/nurisaga-giwebibibo.pdfIn PDF document text
    • https://kuromazu.weebly.com/uploads/1/3/2/6/132695519/6eb3ab.pdfIn PDF document text
    • https://dujopoda.weebly.com/uploads/1/3/0/7/130739119/soladu_betaxulazuxigid_fixakutoruzubad.pdfIn PDF document text
    • https://daletutanedura.weebly.com/uploads/1/3/1/6/131636587/jogaki-nanasumabirapi-wapezuz-tulujawegagokif.pdfIn PDF document text
    • https://dofazodasi.weebly.com/uploads/1/3/0/8/130873943/4539258.pdfIn PDF document text
    • https://xurolimusogisuw.weebly.com/uploads/1/3/4/3/134395808/jetiruvifiwan_mapenutezowowug.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006fdc.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006fdc.bin)
    • https://s3.amazonaws.com/wilugugo/nemitotoduvutuxabexa.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/74038889226.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/camera_lenses_types.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d0767bf-b32e-4473-a870-50098c712528/4507071268.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/173eb044-a7f1-42f9-96bf-a0a1e47f90aa/alifatick_akrylov_polyuretn.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a265eb12-43de-41c9-9180-11e329a6d107/2099534441.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_off00006fdc.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FDC 5312 bytes
SHA-256: 0011a16c6af86a9dcbe3edb624b16e92596ff109a73946fcab7a1dcd47302b39
font_01_sfnt_off00008201.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8201 11140 bytes
SHA-256: 13392f2aa0bc2fe4408771efdfa0310dfbd4aece35a150ce96524c22ce49c3d4