Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2edc4a8090d96da…

MALICIOUS

PDF

71.7 KB Created: 2021-01-18 16:02:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 819d4014ec35ccc72f65424d1d1aaaaf SHA-1: 637bd1e703e10ab8e3b1acac9320ae1034d93ac5 SHA-256: e2edc4a8090d96da965e2370a7d1b7244b0d14357efa4165ebd2a554e5c6722b
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://maypoin.ru/wb?keyword=download%20chess%20royale%20game PDF link annotation
    • https://berebexamoleti.weebly.com/uploads/1/3/1/3/131384136/genovisudixe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380223/normal_5f9b252c37a16.pdfIn PDF document text
    • https://site-1192597.mozfiles.com/files/1192597/gurinoganonerixajebeli.pdfIn PDF document text
    • https://goraworozegisu.weebly.com/uploads/1/3/4/3/134324811/wavuponajede.pdfIn PDF document text
    • https://vexefanakaxaki.weebly.com/uploads/1/3/4/8/134871487/6971703.pdfIn PDF document text
    • https://cdn.sqhk.co/jivobukafon/vAZifVZ/30664515380.pdfIn PDF document text
    • https://cdn.sqhk.co/pubodegosog/iahcFiM/guide_and_free_diamonds_for_free.pdfIn PDF document text
    • https://cdn.sqhk.co/wevafofed/X7eihc5/86437700433.pdfIn PDF document text
    • https://site-1166680.mozfiles.com/files/1166680/what_does_basketball_hoop_mean_in_spanish.pdfIn PDF document text
    • https://nipefewemaxu.weebly.com/uploads/1/3/4/3/134387654/2530446.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372960/normal_5f9522732147c.pdfIn PDF document text
    • https://site-1252962.mozfiles.com/files/1252962/13520493715.pdfIn PDF document text
    • https://jurefuzosapob.weebly.com/uploads/1/3/4/9/134901670/cb6f47a894bee.pdfIn PDF document text
    • https://site-1177116.mozfiles.com/files/1177116/80808316142.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/tetofamuxulil/edition_wow64_platform_failed_sql_2014.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_off0000da75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA75 5544 bytes
SHA-256: a5eaabd61aacb4c20ea971c18fc113b6167e69e4290cae3da312b2a2da812dc6
font_01_sfnt_off0000ed43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED43 10888 bytes
SHA-256: 98fc179db14ecd6afee6b3fedcff9286a5b9f6f390465c5b766b6a04e9177cfa