Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cc9db2f4c89ee89…

MALICIOUS

PDF

72.2 KB Created: 2021-02-27 03:17:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 892235b4a9dc0efb674fac2e95f00bc3 SHA-1: 96efec941544fb8fbca8e2da08a85079e0631416 SHA-256: 3cc9db2f4c89ee8973ed2f7b49ee6f36599b4e790f6c1467a42312e1598aef9a
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://pelibifir.ru/123?utm_term=how+to+use+a+mini+waffle+maker PDF link annotation
    • https://cdn.sqhk.co/bopesajan/hi33ugd/cbr_comic_reader_ipad.pdfIn PDF document text
    • https://cdn.sqhk.co/gopepilexafi/iemhaWd/cheerleader_dance_off_squad_of_champions_games.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450516/normal_5fe07778bf16c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414166/normal_6026ff64956a9.pdfIn PDF document text
    • https://cdn.sqhk.co/jekidase/3EbWaHA/45479456794.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497646/normal_6028e8b28b721.pdfIn PDF document text
    • https://zigapugulila.weebly.com/uploads/1/3/0/7/130776078/bafiniwubogori-watonetita-mugenu-wuwekewepovo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407313/normal_5ff59445ef085.pdfIn PDF document text
    • https://cdn.sqhk.co/kawinojos/Xgehfhc/hairstyles_for_men_with_thick_hair.pdfIn PDF document text
    • http://vukosodo.iblogger.org/27475511489.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471512/normal_5ffae443c6eef.pdfIn PDF document text
    • https://lewumirobubav.weebly.com/uploads/1/3/4/7/134762292/pagituni.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fufibilola.epizy.com/what_is_the_best_book_of_the_bible_for_beginners.pdfIn PDF document text
    • http://zopimubusa.rf.gd/bofomifexetub.pdfIn PDF document text
    • http://nitesegu.epizy.com/acceptance_criteria_template_excel.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_off0000e08d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE08D 5032 bytes
SHA-256: 958b3ee87c824a487130c6aa7b32f764f3729e69c9657e896f2b3a38200ed37a
font_01_sfnt_off0000f1a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1A0 10080 bytes
SHA-256: f294e36f3b654c548b6c289e2f1976ea67b92ed42b55f6c082f893a0ae872e03