Malicious PDF — malware analysis report

Static analysis result for SHA-256 829850915bd08d6c…

MALICIOUS

PDF

48.3 KB Created: 2020-11-05 16:56:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 6f615c3029645b2090203cca2c715592 SHA-1: 4b2d0e6fce66e7cce3a6122413305906b4d875b3 SHA-256: 829850915bd08d6c62f7640e351608ab4bac2521aa8ba2b56022bbdc9e16f881
74 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafficel.ru/aws?keyword=whatsapp+gb+apk+download+for+android PDF link annotation
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/1515306.pdfIn PDF document text
    • https://risimukino.weebly.com/uploads/1/3/1/3/131383953/809fa5698c.pdfIn PDF document text
    • https://nipufijupetobug.weebly.com/uploads/1/3/1/4/131482996/nugoludutixas-muneguged-xuroxulape.pdfIn PDF document text
    • https://mabedokuk.weebly.com/uploads/1/3/4/5/134582143/sinufotoful-xinutajobatop-fusok.pdfIn PDF document text
    • https://wanuwoziburake.weebly.com/uploads/1/3/4/4/134458428/jekuxifuxoteri_pumisevu_kemodowikoju_zezol.pdfIn PDF document text
    • https://sakuvajavabese.weebly.com/uploads/1/3/1/3/131383602/xolubelozo_polezewurujewab_temivozox_dijada.pdfIn PDF document text
    • https://baletepo.weebly.com/uploads/1/3/0/7/130776023/ginesuladij.pdfIn PDF document text
    • https://folemazilepi.weebly.com/uploads/1/3/1/1/131164248/8c47fb489d610cf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tefelaj/brooklyn_99_torrents.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d02bf779-1b55-433f-a4e1-bbd4e8ee768a/maravilloso_desastre_saga_completa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5407/8871/files/whatsapp_status_bild_lschen_android.pdfIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/canon_rebel_t3_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1dfe398d-e0f0-4b81-8fb7-71c770266d84/50486135649.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007236.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7236 5280 bytes
SHA-256: 14099e1bcfdabaf9c55d1704aa855edaa8224566d98cb18000992adb9f09134e
font_01_sfnt_off00008428.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8428 10092 bytes
SHA-256: 729b0fb1634d308f92eed6621852fa53d8be63c5f69cf9fa42d181129963ee00
font_02_sfnt_off0000a690.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA690 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3