Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f0d1f458d19f554…

MALICIOUS

PDF

70.9 KB Created: 2021-02-19 00:19:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 4ec4db27f2d368b3a514fa27a0a85436 SHA-1: a4f804d511a61a1de6dde6939b87baf9e9245ec8 SHA-256: 3f0d1f458d19f55464a0fc330ed8c0664bf74bfa02e8cb86d30968bc2a67296e
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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/wb?keyword=books%20to%20read%20in%20your%2020s%20reddit PDF link annotation
    • http://yesitalia.fun/fegexuwepawukibojetawtqf.pdfIn PDF document text
    • http://firejowetawo.iblogger.org/shortcut_keys_and_full_form_of_computer.pdfIn PDF document text
    • http://solhq.xyz/jetusubedufebasurnsl.pdfIn PDF document text
    • http://malespw.xyz/palme_matematik_ygs_soru_bankas_zerbpk.pdfIn PDF document text
    • http://samozanyat.info/lometujovoviruslo84x.pdfIn PDF document text
    • http://fb-pageunderreview.com/fovatafarofk.pdfIn PDF document text
    • http://nnorm-id.com/equivalencias_de_pulgadas_a_cm1guby.pdfIn PDF document text
    • http://slamelina.website/34830739598oma38.pdfIn PDF document text
    • http://detonicro.website/6433259272bh2yz.pdfIn PDF document text
    • http://trikotoria.ru/study_guide_for_bone_density_certification9raem.pdfIn PDF document text
    • http://kushtanash.ru/subliminal_psychology_101_free_download2rggj.pdfIn PDF document text
    • http://stopro.store/fisigibasuvovelivibopefake9go.pdfIn PDF document text
    • http://subbellassecret.com/logo_quiz_game_answers_level_26vw9w1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xoxemofunox.epizy.com/printable_symmetry_worksheets_for_grade_2.pdfIn PDF document text
    • https://s3.amazonaws.com/wobuzisibal/estrutura_da_celula_bacteriana.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_off0000d904.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD904 5276 bytes
SHA-256: 57b9c028f30294327c8237484781e5ca62a0a1feaefbdc4855ae2a895156a6bf
font_01_sfnt_off0000eb0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB0F 10448 bytes
SHA-256: 09efb362d69f3bac7ceaeec4fc9f71b7736d8c6608faeebe640c62d3529b6789