Malicious PDF — malware analysis report

Static analysis result for SHA-256 4616732ce96fba4c…

MALICIOUS

PDF

70.0 KB Created: 2021-03-01 21:49:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 04ce8977a65706eb3649fab7c2671517 SHA-1: df706e0ebe61b19f4d68cf0cc53bc92ccfc23923 SHA-256: 4616732ce96fba4c34486d9d6ca5757bf381fdb83e65af98a142b3861ae9e768
184 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
  • 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://dafemum.ru/wix?keyword=vocabulary+level+c+unit+8+answers In PDF document text
    • https://dakawomafi.weebly.com/uploads/1/3/5/9/135959339/xawobuxeg_samowebovoxafi_bosanubetupimo.pdfIn PDF document text
    • http://sefexetewizu.iblogger.org/propel_helicopter_instructions.pdfIn PDF document text
    • http://defesam.22web.org/how_do_you_calculate_currency_exchange_rates.pdfIn PDF document text
    • http://oneitstore.info/41383375269d4bik.pdfIn PDF document text
    • http://50offshop.info/dodgers_last_world_serieshf6jv.pdfIn PDF document text
    • http://50offstore.info/allegiant_book_short_summary5cxhw.pdfIn PDF document text
    • https://zizujegaduxopur.weebly.com/uploads/1/3/5/9/135972979/c501b2.pdfIn PDF document text
    • http://larts.digital/80601542403p67en.pdfIn PDF document text
    • https://cdn.sqhk.co/xidosisew/j1c1gge/nuvazizojuno.pdfIn PDF document text
    • https://daxodewime.weebly.com/uploads/1/3/1/3/131398188/df0d96cd7584f5b.pdfIn PDF document text
    • https://towavakivuno.weebly.com/uploads/1/3/5/3/135318123/3fe358586fb6f1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://wivufaw.epizy.com/after_we_collided_book_price.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/gafititefevozavepajopa.pdfIn PDF document text
    • http://turomidujamo.epizy.com/98100688766.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/basic_naval_architecture_ship_stability.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/christ_church_academy_stone_ofsted_report.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c910.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC910 5228 bytes
SHA-256: c302274bb10c1b8b9dd44ea14085a7c88122eca69f99396a3c36b695cf519348
font_01_sfnt_off0000daef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAEF 9876 bytes
SHA-256: fbb05a6f52dfe065b081754c59da254f6a25c5b640b7ad8a5b6b8bbc2b550d22
font_02_sfnt_off0000fcb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCB7 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34