Malicious PDF — malware analysis report

Static analysis result for SHA-256 c72a3976e924e0bb…

MALICIOUS

PDF

63.5 KB Created: 2021-02-28 12:10:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d04ee5bc2f5329f874340d108d73c3bc SHA-1: 15447e72ef036c244bee2be9fcabece9b5be296a SHA-256: c72a3976e924e0bbe59a7d09c651cd614715c4f585dd1e9b51740d89507b163a
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://gimoguvi.ru/award?keyword=rosemount+3051+manifold PDF link annotation
    • https://cdn.sqhk.co/xuwifoviwalo/iaatjbz/commuter_rail_map_dublin.pdfIn PDF document text
    • https://cdn.sqhk.co/zizenozi/ghajbhv/41575156035.pdfIn PDF document text
    • https://cdn.sqhk.co/dejuxafe/igJjhdx/best_ninja_foodi_ground_beef_recipes.pdfIn PDF document text
    • https://xedutorapul.weebly.com/uploads/1/3/0/8/130813372/jetevaduliv.pdfIn PDF document text
    • https://cdn.sqhk.co/gukokefa/hgeighg/91211128541.pdfIn PDF document text
    • https://tuzutetenufiro.weebly.com/uploads/1/3/4/7/134716615/60d29.pdfIn PDF document text
    • https://cdn.sqhk.co/vumusokutil/idhaNge/mini_retro_popcorn_maker_instructions.pdfIn PDF document text
    • https://cdn.sqhk.co/bupusudiva/heAGUlb/vosuragekibirojavubo.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxonewebuke/jifaidU/pokemon_full_hd_wallpaper_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/kixarozikej/EHgdJha/beligejis.pdfIn PDF document text
    • https://mugakosi.weebly.com/uploads/1/3/1/3/131379948/juwufijuk.pdfIn PDF document text
    • https://cdn.sqhk.co/goworonol/jjgigdh/fobapavavawudenegizaje.pdfIn PDF document text
    • http://janexik.22web.org/triangle_classification_worksheet.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/wulotugadag/estimating_worksheets_ks2.pdfIn PDF document text
    • https://s3.amazonaws.com/jaloto/43372888898.pdfIn PDF document text
    • http://xafexuw.epizy.com/53275354268.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_off0000bf93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF93 5448 bytes
SHA-256: d5c096cb8e1204f24f9306f6aef947d6cd889f262c947e073e839e4e9141fcb6
font_01_sfnt_off0000d216.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD216 9168 bytes
SHA-256: c6383fc427213e390e4ee811dd8ad5634b4dc5c215d3872fb4810cb71056e145