Malicious PDF — malware analysis report

Static analysis result for SHA-256 c83da0067b6e48ed…

MALICIOUS

PDF

72.0 KB Created: 2021-03-01 05:37:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5b69c0c8c3b658a7fa4b66138a97040e SHA-1: 7a9c2ac887f8d0225e673d1bd1b9710cc8ef6942 SHA-256: c83da0067b6e48edfc3f4fa2fe3ec98a5b09e3c7464349862046e50da002daae
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://zajinet.ru/wix?keyword=kinetic+molecular+theory+%2528kmt%2529+worksheet+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4370090/normal_5fe4119e0c703.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386622/normal_600cfcbc69a41.pdfIn PDF document text
    • https://sebupemisopuba.weebly.com/uploads/1/3/4/7/134706320/702727bb3694.pdfIn PDF document text
    • http://wivadanege.iblogger.org/blitzkrieg_2_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/zesuxetirano/dNnkDEp/motogp_racing_2018_mod_apk_unlimited_money.pdfIn PDF document text
    • http://sidufapas.mywebcommunity.org/engineering_mathematics_syllabus_for_gate_ece.pdfIn PDF document text
    • https://cdn.sqhk.co/womawuxinuge/hiKjdQn/word_blitz_tips_norsk.pdfIn PDF document text
    • http://kanaxade.mygamesonline.org/54547695502.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387218/normal_6031e46d17956.pdfIn PDF document text
    • https://cdn.sqhk.co/botuvawezej/gcihZhg/binuvinumunevimofiwibelu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://motitagododef.epizy.com/twilight_saga_breaking_dawn_part_2_music_list.pdfIn PDF document text
    • http://pinisexukatata.rf.gd/what_is_the_police_alphabet_code.pdfIn PDF document text
    • http://kipawewori.epizy.com/57965455049.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/adobe_lightroom_classic_2020_system_requirements.pdfIn PDF document text
    • http://kozogasivufi.myartsonline.com/67793581553.pdfIn PDF document text
    • http://nejimafalun.onlinewebshop.net/how_to_fix_a_gamecube_disc_read_error_on_the_wii.pdfIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/binudis.pdfIn PDF document text
    • http://nufaviziziji.epizy.com/neniguwidibegato.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_off0000de58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE58 5420 bytes
SHA-256: 7728b7af78f2565b3590a40925a115204609b58dc2da4e363028a75b97cac7d0
font_01_sfnt_off0000f0c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C4 9792 bytes
SHA-256: a181fe2dae90acb7233643948c0c6f5231dbdf15adb36ec64f9e6ab198397b3f