Malicious PDF — malware analysis report

Static analysis result for SHA-256 17c76a9d8ffb4243…

MALICIOUS

PDF

67.4 KB Created: 2021-02-14 12:45:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 179e570d43fea9bc857ecd1efba6bd42 SHA-1: 90a42aa937348c5554e1d2b8f3bf746c2d11727b SHA-256: 17c76a9d8ffb4243f53ae90da2d8dbd7c70ba32efb07b44ddfd8daf27aeed972
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/wix?keyword=trex+game+google+dino+run PDF link annotation
    • https://gukepofefefika.weebly.com/uploads/1/3/1/4/131437977/2e6e0c48afcd5fa.pdfIn PDF document text
    • https://bodonoweti.weebly.com/uploads/1/3/1/8/131856710/3215724.pdfIn PDF document text
    • http://ttttrrrr.space/wigevijerimififupogozvh2nk.pdfIn PDF document text
    • https://wexarasi.weebly.com/uploads/1/3/4/3/134351888/a32559be25.pdfIn PDF document text
    • http://natbeach.space/jurnal_sistem_informasi_akuntansi_keuangan_daerahoppmv.pdfIn PDF document text
    • https://ramasiwo.weebly.com/uploads/1/3/5/3/135390431/tofefinafavis.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415531/normal_5ff01d6852901.pdfIn PDF document text
    • http://vuxijagodoku.22web.org/78219181768.pdfIn PDF document text
    • https://jaroxifapo.weebly.com/uploads/1/3/1/6/131636664/53082.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sunusegelu.rf.gd/katuxurepil.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/epithelium_forms_the_epidermis.pdfIn PDF document text
    • http://xoxexanizeb.epizy.com/70387236485.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/pinabevef.pdfIn PDF document text
    • http://xedekig.rf.gd/wevorowobe.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/tufaju.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_off0000cc8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC8C 4984 bytes
SHA-256: f69f1026f3f3d8bf82b96c244a605d925aeaf5a7aa235d1ad2785f440db51252
font_01_sfnt_off0000dd6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD6D 10504 bytes
SHA-256: 6200e454911386dce89fc66b1ff9eac4717fc56db76af70561e038b5e123e5f3