Malicious PDF — malware analysis report

Static analysis result for SHA-256 96ca65ff07342887…

MALICIOUS

PDF

73.2 KB Created: 2021-02-16 17:47:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: fc2e04d0b884b8c2ac9aef588602e25f SHA-1: 1eac786b1c16bd027eb57678659f7d69e63a498c SHA-256: 96ca65ff07342887b6a302ca34ac921c0393ae93d1832a00a6d9fabde3a5f60a
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/wix?keyword=pokemon+sun+moon+clothes+list In PDF document text
    • http://alluniversity.fun/33754996581mur2z.pdfIn PDF document text
    • https://tukumexof.weebly.com/uploads/1/3/4/7/134721389/b785653d8d3951.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368466/normal_5fec8e3ebd902.pdfIn PDF document text
    • http://buytoday.cc/acute_appendicitis_in_pregnancypk5n9.pdfIn PDF document text
    • http://confirmyourverifiedbadge.com/zepunezuzisowofdojee.pdfIn PDF document text
    • http://zhigina.ru/clash_of_clans_hack_tool_pck3g4v.pdfIn PDF document text
    • http://hushseo.online/tv_cabinet_designs_for_master_bedroomofrgo.pdfIn PDF document text
    • http://7lessons.website/958889300777vocp.pdfIn PDF document text
    • http://rarebuzoxexovom.22web.org/compound_sentences_worksheet_4th_grade.pdfIn PDF document text
    • http://pokypka.xyz/pigakewunolovozixeruda1wy0a.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/nemafu/begum_jaan_bengali_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/rutufokedizon/ramisipo.pdfIn PDF document text
    • http://vukenorap.epizy.com/hiroshima_castle_japan_guide.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_off0000e554.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE554 4800 bytes
SHA-256: 1c48a4d47674dd624f3449d3aec62bc2db64dab8a86df82e7a457c407d3ea510
font_01_sfnt_off0000f587.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF587 10184 bytes
SHA-256: 7a73319cb5d1fdd3ec44a29de38baaaca0931d08e5d5307289fa732998a26344