Malicious PDF — malware analysis report

Static analysis result for SHA-256 e35b58805fcb7603…

MALICIOUS

PDF

70.2 KB Created: 2021-02-13 05:43:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 638df206b9bba29bb572c7b6f44e9ce2 SHA-1: 27ccc6b88f8928921b1a0ada1768f92fa78870d3 SHA-256: e35b58805fcb76037a57220c0cc66e5b0d11bac23d8e758746b657c2c168b9d0
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jottigo.ru/wix?keyword=2007+yamaha+v+star+1100+oil+filter+relocation+kit PDF link annotation
    • https://notaxivarem.weebly.com/uploads/1/3/4/6/134633458/a8ac112a6.pdfIn PDF document text
    • https://zuginapox.weebly.com/uploads/1/3/2/6/132695273/99c4e78bd035c2.pdfIn PDF document text
    • http://de-bewertung-889562.icu/pentagon_naughty_boy_lyrics_terjemahankn3e3.pdfIn PDF document text
    • http://testrun.ru/kuwesa7hgar.pdfIn PDF document text
    • http://seomagnat1.online/alvida_audio_song_free3qk52.pdfIn PDF document text
    • https://zidimegaga.weebly.com/uploads/1/3/0/9/130969389/3176109.pdfIn PDF document text
    • http://kvrovk.xyz/47208488162tzq5e.pdfIn PDF document text
    • https://vomanoxugorufo.weebly.com/uploads/1/3/5/3/135331351/6762581.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/forupokisip/sidewagemekegelok.pdfIn PDF document text
    • https://s3.amazonaws.com/purufiz/40687932607.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/jodojoneferimisi.pdfIn PDF document text
    • http://mofibukuzoke.rf.gd/renold_conveyor_chain_design_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/34044909745.pdfIn PDF document text
    • http://vozuxekeve.rf.gd/lapok.pdfIn PDF document text
    • http://nerepigov.rf.gd/wunikopijarejavavima.pdfIn PDF document text
    • http://vanuragevexofe.rf.gd/22613939478.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_off0000d1d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1D1 5660 bytes
SHA-256: 8250cf4449247241980f81e8bf6cc0b879652b3984903d5404e0dbfbd74acfb5
font_01_sfnt_off0000e506.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE506 10740 bytes
SHA-256: c50ba267a829767cb1122dee0220c0741024bee2799832960e64722a6ba672d9