Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a14d78338c98b3b…

MALICIOUS

PDF

70.0 KB Created: 2021-03-01 09:11:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4b248da1e19fd8076d1769543adca1cd SHA-1: 72111e88b08b4cc773e1d75c1aa24b938bfca870 SHA-256: 2a14d78338c98b3bfa010da6a22214f4a78a4429fb5515d8efaaea1f6973eed5
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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://seumenha.ru/wix?keyword=naruto+ultimate+battle+weebly PDF link annotation
    • http://umkatrade.ru/skyrim_ps3_mods_installieren_germanc8s7z.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366350/normal_602105b0e351d.pdfIn PDF document text
    • https://xuniruki.weebly.com/uploads/1/3/0/7/130739043/gezevogigupu_gujotup_xuzowan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365575/normal_602975a9a5c33.pdfIn PDF document text
    • http://rubisteq.online/video_editor_music_video_maker_apkvti7o.pdfIn PDF document text
    • https://lepeposozul.weebly.com/uploads/1/3/5/3/135317560/tesam-mujejagoxuba.pdfIn PDF document text
    • https://wosobariwosamu.weebly.com/uploads/1/3/4/3/134372044/8517999.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406216/normal_5fc6ba4bc1246.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382778/normal_5fd8f244e9203.pdfIn PDF document text
    • http://yognat.space/pujizalefezemaf70xv.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/sefipa/xudujukoj.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/numefapobo.pdfIn PDF document text
    • http://nazedizabif.rf.gd/railway_reservation_form_online.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/is_tai_chi_better_for_you_than_yoga.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/38577962674.pdfIn PDF document text
    • http://fopugaxug.rf.gd/nutritional_information_cake_mix.pdfIn PDF document text
    • http://bufalirafuma.epizy.com/how_do_you_alphabetize_excel_spreadsheets.pdfIn PDF document text
    • http://befojarariwowab.epizy.com/durga_saptashati_path_vidhi_in_marathi.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/definition_of_conflict_transformation.pdfIn PDF document text
    • http://nipovowegase.rf.gd/best_games_to_play_on_android_emulator.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_off0000ca99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA99 3724 bytes
SHA-256: 59701ab6f1a8c012dd8ec870d317e4651c2abf9fe53e1fa5cdcb5946a55c7908
font_01_sfnt_off0000d7d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7D6 4956 bytes
SHA-256: 698329c6a23f9ce3394d660d73c824175043064e6f25fef503f0ba54ba72a0d0
font_02_sfnt_off0000e8b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8B7 9816 bytes
SHA-256: 6787937b791caac76117a8961b326cf0d3b193ee0e7093e1c4d75de1faf6e5a9

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