Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ae3f86d69185a41…

MALICIOUS

PDF

68.5 KB Created: 2021-01-20 22:58:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ed6cb7e75703bb98a24bfd17678e2872 SHA-1: 30e51801ca820edf295e5b771fd12dcbb9c04d8d SHA-256: 9ae3f86d69185a4133fc1a12e9593dfc0bf2e4a0f7b055a73c3bc639641017be
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/wb?keyword=airfare%20to%20miami%20from%20newark%20nj PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4450419/normal_5ffcdebb6af7e.pdfIn PDF document text
    • http://tawilexupo.iblogger.org/contoh_report_text_bahasa_inggris_hewan.pdfIn PDF document text
    • http://xosuvirakogaf.iblogger.org/torozokarupugobufudo.pdfIn PDF document text
    • https://cdn.sqhk.co/jasowipe/gLwy5if/76067380676.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369927/normal_5fb28d2261508.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496148/normal_5ff1b1ad8a48d.pdfIn PDF document text
    • https://tololomajaju.weebly.com/uploads/1/3/4/4/134472688/ea356743ca.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/fejenijovekozu/kinemaster_cracked_apk_revdl.pdfIn PDF document text
    • http://kasaxamaburabuz.epizy.com/vagekifewixoneso.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/57208491718.pdfIn PDF document text
    • http://radujexoxetapil.epizy.com/metabolismo_celular_anabolismo_y_catabolismo.pdfIn PDF document text
    • https://s3.amazonaws.com/nedijowewoded/probability_problems_and_solutions_free_ebook.pdfIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/chain_of_custody_form_pnp.pdfIn PDF document text
    • https://s3.amazonaws.com/naxozelozude/printable_world_map_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/34132900411.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_off0000d015.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD015 4924 bytes
SHA-256: e196c05939a7d1bce81e0a2e0883aec0baebd21b3b73475080034c5d4c1cadc1
font_01_sfnt_off0000e0d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D5 10748 bytes
SHA-256: 8355c5fa8a397fd4faac7d9df03fa4135321f2bbaf824ad38e68f3cd55f73548