Malicious PDF — malware analysis report

Static analysis result for SHA-256 548714fb468ce9f1…

MALICIOUS

PDF

74.4 KB Created: 2021-02-04 06:16:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 846939c62e9606471156192c1b156989 SHA-1: 25051c1717951e5ca7afda056e15ff85254b3eaa SHA-256: 548714fb468ce9f19f6e0f58da3f12333e5cd10fdff0a41dc8a97f715b30f5fb
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://jacksth.ru/aws?utm_term=probability+tree+example+and+answer PDF link annotation
    • http://fastgetme.online/nonfiction_book_report_answersxuzwn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427077/normal_5fe380f63f44f.pdfIn PDF document text
    • https://bobifadilow.weebly.com/uploads/1/3/5/2/135295989/678186.pdfIn PDF document text
    • https://rigefenasoje.weebly.com/uploads/1/3/0/7/130776330/savubidufusa.pdfIn PDF document text
    • https://bateworolod.weebly.com/uploads/1/3/4/3/134315912/1c9a2eca7f3072b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370319/normal_5fda1dc733829.pdfIn PDF document text
    • http://fofesivolu.iblogger.org/63309420373.pdfIn PDF document text
    • https://kajipeluvo.weebly.com/uploads/1/3/4/3/134318391/fajijanefif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478415/normal_601635f51db3d.pdfIn PDF document text
    • http://lnstagramsupportingcenter.com/550897875506m8qv.pdfIn PDF document text
    • https://fuzipoxo.weebly.com/uploads/1/3/0/8/130873840/wajemonuberasi.pdfIn PDF document text
    • https://cdn.sqhk.co/fuxiwimemo/9TrfKYv/41879225358.pdfIn PDF document text
    • https://cdn.sqhk.co/xiladuxe/gH3cssp/carrageenan_cancer_snopes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kupikobu.epizy.com/bhairava_songs_video_hd.pdfIn PDF document text
    • http://wapudajikipidem.epizy.com/context_clues_worksheets_grade_4.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_off0000e39f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE39F 5508 bytes
SHA-256: 188774b9fc32a3ea2bd71100546d365fae7776288f1119d7c096aded4e838b3d
font_01_sfnt_off0000f654.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF654 11248 bytes
SHA-256: 144be7b314546d88686873253e60e811187fae8ec2db3220664d207b0665fcae