Malicious PDF — malware analysis report

Static analysis result for SHA-256 93b1a4e5b44f3359…

MALICIOUS

PDF

67.0 KB Created: 2021-01-29 15:26:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 17064cf48c3a261ad5cb3871ee143e7b SHA-1: ae394a3cf2b19f96ccddb8c08fd9010c771e1e81 SHA-256: 93b1a4e5b44f3359da96a9decb96b95613d9e4318939fd6bbea29b31633b6e4c
136 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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://bologen.ru/aws?utm_term=today+malayala+manorama+news+paper+pdf PDF link annotation
    • http://7evenrp.ru/madden_18_player_ratings_spreadsheetgv265.pdfIn PDF document text
    • http://all-casino.xyz/luxufabuzaberoraxofivotew0ksjd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390374/normal_5ff844968518f.pdfIn PDF document text
    • http://midazimika.iblogger.org/jidipevemib.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370266/normal_5ff1920488d98.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378149/normal_5ff3e37ebb94a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412151/normal_5fe4e0dcc1c19.pdfIn PDF document text
    • http://instapriz365.site/593664611405i8ys.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386095/normal_5fd0988c61496.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389568/normal_5fe941139e9e9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414173/normal_5ffa0670f21c2.pdfIn PDF document text
    • http://takipleskazan.org/catfish_nev_wifeevipa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451374/normal_600b2e599ed9d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mofikasim.epizy.com/kawiwuxuw.pdfIn PDF document text
    • http://bajobakokela.epizy.com/bede_academy_head_of_sixth_form.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_off0000c97c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC97C 5332 bytes
SHA-256: c0cbeb64d6656b316af9bfe5446604508f6e62c47c877520099b8a3d6d0437bf
font_01_sfnt_off0000db9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB9F 10392 bytes
SHA-256: 13eca634e3aec19b535377ea55677848a45658b222d7286a829a17db3d957fd8