Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f49a3c270374898…

MALICIOUS

PDF

73.2 KB Created: 2021-03-04 10:02:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f447336374219d1fa8d4b0fdd827e015 SHA-1: 026702ab62024d4ab62aabbc2ec746df09e65c9e SHA-256: 5f49a3c2703748985e821f8d8113059dabe6a486229326423d1c98b0f3e119c2
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://botokaw.ru/award?keyword=how+to+draw+a+tree+with+branches+step+by+step PDF link annotation
    • http://idealslimitalia-official.site/zakenuganivxvdy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383703/normal_603a29332e6df.pdfIn PDF document text
    • http://tuzogat.sportsontheweb.net/singer_stylist_534_needles.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409420/normal_5fe428e9812c0.pdfIn PDF document text
    • https://cdn.sqhk.co/tosuwukiwate/xhdaPYE/rolokalajigoraxifebebu.pdfIn PDF document text
    • https://cdn.sqhk.co/natokaze/g8jdJhi/riroguzufeserunixelud.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459469/normal_5fce8b149c4b0.pdfIn PDF document text
    • https://mirajaxudedina.weebly.com/uploads/1/3/0/7/130775596/67060720d4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500444/normal_5ff7a4ff4c31c.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/farowug/how_to_get_music_for_free_on_iphone.pdfIn PDF document text
    • http://zogoxuf.atwebpages.com/what_are_burger_king_fries_cooked_in.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/bugegulesupanixogutuvexam.pdfIn PDF document text
    • https://s3.amazonaws.com/satulibaren/34371199306.pdfIn PDF document text
    • https://s3.amazonaws.com/kafises/dorewikonod.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_off0000e285.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE285 5424 bytes
SHA-256: ec8edd205cce1bcb7b0a7ea663064d9da7d2c67bd2d53ded6e6bd516c2170cf8
font_01_sfnt_off0000f4fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4FD 10196 bytes
SHA-256: ad4d3689c60829a0c3c575a584bae4718ff1ca0fb99e6676ad9e698ab058ba3f