Malicious PDF — malware analysis report

Static analysis result for SHA-256 100b5dc3d99be6a3…

MALICIOUS

PDF

73.0 KB Created: 2021-02-20 16:58:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 49fa0376496dcb4f0866b174c0c0c714 SHA-1: ab2ec69368852a777533b25728da032b2775736b SHA-256: 100b5dc3d99be6a373145b8dfa25437dbeca9f7efa0d3479da1137c13723e9c2
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://bologen.ru/aws?utm_term=what+does+an+information+systems+manager+do PDF link annotation
    • https://satuvimafinob.weebly.com/uploads/1/3/0/7/130739393/lijizorofa-kazaf-lizaremarif.pdfIn PDF document text
    • https://sodukosikel.weebly.com/uploads/1/3/4/5/134598711/guvubakewenaje.pdfIn PDF document text
    • https://jakugogafezokev.weebly.com/uploads/1/3/1/4/131437362/96a8513e586a0f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476765/normal_600da99776ce0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502336/normal_5fe239cd97b1b.pdfIn PDF document text
    • https://cdn.sqhk.co/manuguwe/fBTnha7/cara_hack_shinobite_naruto_x_boruto_ninja_voltage.pdfIn PDF document text
    • https://jigurojo.weebly.com/uploads/1/3/5/3/135321607/xiroxaga.pdfIn PDF document text
    • https://lewibodozibepa.weebly.com/uploads/1/3/3/9/133997785/ripozatug_farefuz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470391/normal_6026ac6542c9a.pdfIn PDF document text
    • https://cdn.sqhk.co/napumefu/bovOAgg/82464178972.pdfIn PDF document text
    • https://xifugewelude.weebly.com/uploads/1/3/4/3/134353264/3268386.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385410/normal_5fdd2fe428b9c.pdfIn PDF document text
    • https://cdn.sqhk.co/safovokon/fmGsy7E/15276732422.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393883/normal_5fe278e4885e1.pdfIn PDF document text
    • https://cdn.sqhk.co/gonolesuzam/4PykFLs/bed_wars_map_hypixel_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/revelation_song_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/68466331337.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/xolom.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 PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e36d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE36D 5404 bytes
SHA-256: d18faea474e0d000bf93f41932bc7e7339af1c8f0261ed3cb83c971dc226d171
font_01_sfnt_off0000f5ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5BA 9756 bytes
SHA-256: db9db3ab68077ea371fa4db8956177ecfc4e2801053741ed1fe4b6d5a0d18a71

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