Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a596f4a17c6bcbb…

MALICIOUS

PDF

70.3 KB Created: 2021-02-18 19:37:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e97b12076948c13189602df02bb6c3a3 SHA-1: 3a851f586f73b639a361d87a3c430139a180ba4b SHA-256: 5a596f4a17c6bcbb583413d283d0b5afd801afd8d22872d66270ae024f0f2d6c
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://bologen.ru/aws?utm_term=samsung+hw+e450+remote PDF link annotation
    • https://cdn.sqhk.co/lakivasulis/65igSMm/ringtones_mp3_new_2020_remix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501028/normal_6019dc31352c2.pdfIn PDF document text
    • https://cdn.sqhk.co/xuwifoviwalo/idjdij5/purugizogedimi.pdfIn PDF document text
    • http://quickpapp.online/granny_chapter_two_apk_old_versionzqj0g.pdfIn PDF document text
    • https://kijabejinal.weebly.com/uploads/1/3/0/9/130969506/367446.pdfIn PDF document text
    • https://cdn.sqhk.co/tilafukefuwe/iVvhiic/fukovifogimareda.pdfIn PDF document text
    • https://cdn.sqhk.co/lufezeralon/ahivjad/54609615893.pdfIn PDF document text
    • https://cdn.sqhk.co/bimeniwog/gj6jdDP/justin_bieber_friends_letra_espanol.pdfIn PDF document text
    • https://farazekij.weebly.com/uploads/1/3/4/3/134379469/6f90532a.pdfIn PDF document text
    • https://pobivizitonep.weebly.com/uploads/1/3/2/8/132815986/3829895.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424331/normal_5ff6d0f4cda0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416150/normal_5fe73fd453ba6.pdfIn PDF document text
    • https://doxemikawapuki.weebly.com/uploads/1/3/4/3/134314999/9560849.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/lofese/gds_7th_pay_commission_latest_report.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/abstract_art_pictures.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_off0000d2d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2D0 5616 bytes
SHA-256: f0fb2a2426a5ee85bfafd4abcb4914efd39eef6b50a726309c6cd7a22ba55715
font_01_sfnt_off0000e5d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D9 10896 bytes
SHA-256: 1b78f3dbbc81d42f60b5a31fe60de7f5b4e6c6a8e2fbeb2aac17f86cdf05628d