Malicious PDF — malware analysis report

Static analysis result for SHA-256 e91542408673dddb…

MALICIOUS

PDF

74.5 KB Created: 2021-02-28 09:44:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b88204d86eeab16dd681460af0fc513a SHA-1: 5c7d336b1f510417a5a9cf9f2f93e81db840e8c6 SHA-256: e91542408673dddb7ed6c9b116d1c54122e2a7b44dfc7ebb73bd7055b0b276bb
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/wb?keyword=what%20does%20f01%20mean%20on%20a%20dryer PDF link annotation
    • https://cdn.sqhk.co/xiteduva/9hjgcB5/alchemy_shattered_pixel_dungeon.pdfIn PDF document text
    • http://static-start.top/pajigiwitabegifulupovuq4s9f.pdfIn PDF document text
    • http://copyrightviolationcenters.com/ucla_art_history_major_acceptance_ratenqved.pdfIn PDF document text
    • https://sunowakodi.weebly.com/uploads/1/3/2/8/132814938/1891834.pdfIn PDF document text
    • http://lamakexo.scienceontheweb.net/72501394552.pdfIn PDF document text
    • http://bibuzikufaje.mygamesonline.org/blue_eyes_white_dragon_1st_edition_ske-001_value.pdfIn PDF document text
    • http://ersoil.fun/93812435455yjbcb.pdfIn PDF document text
    • http://pihodze.com/noreberivanuvom0d0rj.pdfIn PDF document text
    • http://esplus.pro/onenote_2013_tutorial_deutsch1dk11.pdfIn PDF document text
    • https://subilitukufune.weebly.com/uploads/1/3/4/6/134629352/jisijetisopakale.pdfIn PDF document text
    • http://easylearning.space/82893348151a8x03.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/dazuxujepov/layered_armor_guide_mhw.pdfIn PDF document text
    • http://fuvarijes.atwebpages.com/913889124.pdfIn PDF document text
    • http://satawakerexe.atwebpages.com/xawibejipadelefuguj.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/suxipef.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_off0000e790.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE790 5424 bytes
SHA-256: d6c0693bb195b420e5df7c66c37361ba09ae94659db9dc0fc45b7a849be9b783
font_01_sfnt_off0000f9ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9EE 10328 bytes
SHA-256: 5bcdb5e68fd6ed4dcaf51717691e16a56154ee02477318ba3d6504db49e21195