Malicious PDF — malware analysis report

Static analysis result for SHA-256 17ad7a7a7ff405f8…

MALICIOUS

PDF

71.4 KB Created: 2021-02-19 08:20:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 45858f4198119f0db1ff44a0af23a965 SHA-1: d1fbed3bb679cedd6579ae53fcd0e4d9651c7826 SHA-256: 17ad7a7a7ff405f8ba1af37b8c44c5d4ba607fee1a9b2da198966fc949904942
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/123?utm_term=planning+for+personal+development+plan PDF link annotation
    • https://vurusewotuludi.weebly.com/uploads/1/3/0/7/130739344/2f27ebf0a.pdfIn PDF document text
    • https://bitiwinelezom.weebly.com/uploads/1/3/1/8/131856531/edec7ea.pdfIn PDF document text
    • https://rusaxexuratibu.weebly.com/uploads/1/3/2/6/132680860/tevekoxabikum.pdfIn PDF document text
    • http://bionatur.space/arcane_quest_legends_full_apk_moda3nex.pdfIn PDF document text
    • https://cdn.sqhk.co/buvovemif/hvSr1gg/duvezunogijukisifururov.pdfIn PDF document text
    • http://telemprom.xyz/mopetovapijigogprbnw.pdfIn PDF document text
    • https://dapasubasawesol.weebly.com/uploads/1/3/4/3/134383907/xikujelun.pdfIn PDF document text
    • https://gukufevekexuse.weebly.com/uploads/1/3/5/3/135305262/gamawuk-noforul-sagapebegiro-sazevewuridegol.pdfIn PDF document text
    • http://copyrightproblem.com/dugumabyhn4.pdfIn PDF document text
    • https://cdn.sqhk.co/kizofapekeku/htijjhq/drum_machine_ableton_free.pdfIn PDF document text
    • https://nozabuzewetuk.weebly.com/uploads/1/3/2/6/132683147/9640862.pdfIn PDF document text
    • https://farazekij.weebly.com/uploads/1/3/4/3/134379469/58a7a2c90.pdfIn PDF document text
    • https://cdn.sqhk.co/pojuzijix/hljd2gj/47927000916.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/viboxikuz/diversey_chemicals_data_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/zukogi/wuxasipa.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_off0000dc96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC96 5424 bytes
SHA-256: c9c308bcd0271e97d6eb4616abf235abb867f37bf0d90b3d2f919c55aab8c223
font_01_sfnt_off0000ef00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF00 9952 bytes
SHA-256: a2ae583a76eb21f43e9fb850ec4678eb4303bf9ea6a4bbccf72f030455b1dc34