Malicious PDF — malware analysis report

Static analysis result for SHA-256 a30e686551f17a95…

MALICIOUS

PDF

72.2 KB Created: 2021-02-20 21:37:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 99df60cab8de0c67b11b3aa11c55acdc SHA-1: f3e63dba3fa819863e88fc59da5728592bea89b2 SHA-256: a30e686551f17a95c2687ee4dc33a3ee734638399467ecc7ca2d9316a4364359
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://druttle.ru/wix?keyword=beowulf+chapter+questions+and+answers PDF link annotation
    • http://phulop.store/decolite_charcoal_sheet_cataloguedjsrb.pdfIn PDF document text
    • http://all-host.site/how_to_put_zmodo_camera_back_onlinexvr4v.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378623/normal_6015ff2b9e995.pdfIn PDF document text
    • http://eferevole.com/60258387165prxt9.pdfIn PDF document text
    • https://pipumemudif.weebly.com/uploads/1/3/4/8/134866913/1126148.pdfIn PDF document text
    • http://itravelimpressions.com/tv_live_apk4gy61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369638/normal_600e74d66d265.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480414/normal_6018c466146d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394082/normal_600d323ebcbb3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489853/normal_5fee85725130e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425491/normal_5fe900b4b4d58.pdfIn PDF document text
    • https://mixifomako.weebly.com/uploads/1/3/1/1/131164472/dedazimizidego_bogalituzoto.pdfIn PDF document text
    • http://olimp-home.com/jolorudetokotemufedavidow49w25.pdfIn PDF document text
    • https://farejebizaf.weebly.com/uploads/1/3/0/8/130815013/xivedejut_rejet_sutojebosu.pdfIn PDF document text
    • http://reabook.online/zogorapotadr5m1g.pdfIn PDF document text
    • http://coolstudent.space/spirit_level_app_apkbtz91.pdfIn PDF document text
    • http://sale50.pro/batexokagikugozefurirusom7mu5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389365/normal_602d03fb519dc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ddb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDB3 5508 bytes
SHA-256: 030ad8ed6b287e773489d2dcf138b1fa9177efd151a4d785163d34d2826a93b4
font_01_sfnt_off0000f07d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF07D 10196 bytes
SHA-256: 75b9be9dfdf0ec14bbcac851d9e6eda418fe1a2e300186f27942a8662ca709c5