Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddf774c96f09fef3…

MALICIOUS

PDF

67.5 KB Created: 2021-03-04 12:58:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: eeb2746ceccf9be0d29ba1a49cb0a8b4 SHA-1: 0ffe648d167bfe73938ab630f04c75b4d60b54d5 SHA-256: ddf774c96f09fef385fd95212eef55022ba058df095bc01b3d0fe4b0c97cac4e
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://ponafet.ru/wix?keyword=schoology+klein+isd.net PDF link annotation
    • https://cdn.sqhk.co/xasurila/jRKrjdT/war_robots_test_server_4._7_download.pdfIn PDF document text
    • https://sazopugewado.weebly.com/uploads/1/3/1/4/131453094/magodifev.pdfIn PDF document text
    • http://cashtanks.fun/2002_ford_explorer_factory_rims_for_salev5pg6.pdfIn PDF document text
    • https://penotogales.weebly.com/uploads/1/3/1/4/131438478/puveti.pdfIn PDF document text
    • https://felilediwifagid.weebly.com/uploads/1/3/1/4/131453780/wisusobo_gusex_rezesoxu_fakepi.pdfIn PDF document text
    • https://wunevebisa.weebly.com/uploads/1/3/5/3/135306556/xomiribofodixi.pdfIn PDF document text
    • https://dorixakogika.weebly.com/uploads/1/3/6/0/136051108/7250517.pdfIn PDF document text
    • https://lekumoga.weebly.com/uploads/1/3/2/6/132683130/vevezivimaxaxojesul.pdfIn PDF document text
    • https://cdn.sqhk.co/mikedeto/KijRlja/battle_royale_wallpaper_download_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/wizokawoxo/hQatjeN/11516761616.pdfIn PDF document text
    • https://wisiwojapano.weebly.com/uploads/1/3/4/8/134896472/850878.pdfIn PDF document text
    • https://tikiruwilowu.weebly.com/uploads/1/3/1/1/131163793/wududagit.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/zubata/apple_store_update_not_ing.pdfIn PDF document text
    • http://danebusuji.onlinewebshop.net/5th_grade_handwriting_samples.pdfIn PDF document text
    • http://ziwivazud.onlinewebshop.net/18944924309.pdfIn PDF document text
    • https://s3.amazonaws.com/vipinib/jutibozawoteladifafi.pdfIn PDF document text
    • https://s3.amazonaws.com/vebisop/aluminium_sheet_weight_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/baxemawolixisuga.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_off0000cbf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBF5 5196 bytes
SHA-256: b006fc15569de56cd16bd54b247a150941ac6a517360fd1972d21ff11f1524ff
font_01_sfnt_off0000ddaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDAF 10352 bytes
SHA-256: d214576fbe7f6700c70c08fef13f3fe4bc78c5a118499c93d6066b939d853eac