Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b1ceb4b421e631a…

MALICIOUS

PDF

75.4 KB Created: 2021-02-12 19:42:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d19f11154e23cd1c3e87969547174a54 SHA-1: c1637a606ac0cc116de64870a9da3e84dec67e46 SHA-256: 9b1ceb4b421e631a336d3f2dac4fdd03d64527f4ea030555548e9fb81e2ca503
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://baarspo.ru/123?utm_term=why+did+russia+leave+wwi+early PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4453144/normal_5fed3ac56c24d.pdfIn PDF document text
    • http://phrensy.co/human_fall_flat_xbox_walkthroughwq4az.pdfIn PDF document text
    • http://instapodarok365.site/38662157408x08bt.pdfIn PDF document text
    • http://meetsalle.xyz/pamuminulorerufi8cv2.pdfIn PDF document text
    • http://xoxibusu.iblogger.org/dawekegex.pdfIn PDF document text
    • http://sushibara.net/harbor_breeze_remotee3hta.pdfIn PDF document text
    • https://cdn.sqhk.co/dakagugi/xsifRjg/jukike.pdfIn PDF document text
    • http://ylyn.ru/58376845047dt4rg.pdfIn PDF document text
    • http://itprod.space/437651062975340h.pdfIn PDF document text
    • http://tryadasert.online/priyaragalu_songs_download2u69c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fiwipofel.epizy.com/kaxarajoligutinerefopo.pdfIn PDF document text
    • https://s3.amazonaws.com/jijari/ritareguwofawoz.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/separated_compound_words_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/tapaponiwiditifovokoforaf.pdfIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/salejotonifijemorezuzugo.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_off0000e90c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE90C 5180 bytes
SHA-256: e18f04223c0380e74fd90edf5cf0cf4b56306719b706a38ca3f8af8ec584e6d0
font_01_sfnt_off0000fac3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAC3 11464 bytes
SHA-256: d2480f710b277f3cb0294484e4513e5d9cc59939a6ed1856b2978be2b30f031b