Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ccb25b72518027e…

MALICIOUS

PDF

73.1 KB Created: 2021-02-27 17:23:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1c38a30cf713fbfaa8a3363de006b7ab SHA-1: c2ba7b11dd2f0940d7c704d255403b8a868f16ee SHA-256: 6ccb25b72518027e74469e905c627fc43188ab5e5c5dc1ce8c8d0c892a23be83
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/award?keyword=what+is+the+author%2527s+tone+in+i+too+sing+america In PDF document text
    • http://vipadobotisituz.mygamesonline.org/4663056948.pdfIn PDF document text
    • http://jorowijedo.mywebcommunity.org/40612532748.pdfIn PDF document text
    • http://talobaniwi.iblogger.org/daril.pdfIn PDF document text
    • http://vaxisezawoged.scienceontheweb.net/how_to_soft_reset_samsung_tab_3.pdfIn PDF document text
    • http://mokemowowove.mygamesonline.org/used_car_inspection_checklist_template.pdfIn PDF document text
    • http://fisidunetozusi.iblogger.org/ein_deutsches_requiem.pdfIn PDF document text
    • http://donurejin.iblogger.org/kannada_bhavageethe_video_songs_free.pdfIn PDF document text
    • https://tixuguzuw.weebly.com/uploads/1/3/4/0/134096155/xinowef.pdfIn PDF document text
    • http://nelawetazabuta.66ghz.com/34677552462.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kepofif.onlinewebshop.net/springfield_ar_15_stock_kit.pdfIn PDF document text
    • http://gutekuretejapoj.onlinewebshop.net/john_the_ripper_using_rockyou.pdfIn PDF document text
    • http://nabunuwo.epizy.com/zuwug.pdfIn PDF document text
    • http://gurabagoderes.atwebpages.com/58451389070.pdfIn PDF document text
    • http://tosaxope.rf.gd/jolly_phonics_games_online_free.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_off0000e42b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE42B 5228 bytes
SHA-256: 8d7fc69883d0fde6b503d34cb85fc498ab0ba9c29cd4dc4ab782d1dda79e7f2f
font_01_sfnt_off0000f5df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5DF 9908 bytes
SHA-256: a116bfd3f91e1ee800c6f97931785dd4131a18c3bc47d7053582f0d9bb73950a