Malicious PDF — malware analysis report

Static analysis result for SHA-256 287a0c1b3cb94b81…

MALICIOUS

PDF

70.1 KB Created: 2021-02-12 12:53:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d61a8b3dae199492124d477bf31814b2 SHA-1: 48688d0bde18a784baf3de33250468f6cc9a11c2 SHA-256: 287a0c1b3cb94b81875220b0685e2014450e05b6d9625bbe24606f223ba3e22e
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/wix?keyword=huawei+swype+apk+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4459469/normal_5fcbd7dc9fbeb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485711/normal_5fe9e7c473210.pdfIn PDF document text
    • https://cdn.sqhk.co/jeporikate/g6rQmhb/zubazipijenadoxidudo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479222/normal_60006a9381eb2.pdfIn PDF document text
    • http://smotrikino.fun/deviant_art_porne24sw.pdfIn PDF document text
    • http://eyebrowthreadingdallastx.com/xaxaloforakuripapeluzoxan9uvbs.pdfIn PDF document text
    • https://cdn.sqhk.co/tedalome/3hfiih1/litomubamexuvapejumaxum.pdfIn PDF document text
    • http://poradoit2.site/mavazeromirumedobopudemixi4ymh.pdfIn PDF document text
    • https://cdn.sqhk.co/miloxuso/ugiDTxJ/fox_news_talk_radio_live_stream.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448346/normal_5ffb61222b6a8.pdfIn PDF document text
    • https://cdn.sqhk.co/sujubowip/nhhSgjx/general_motors_financial_analyst_salary.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/jezobasit/appulse_corp_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/liriposusowinirojobo.pdfIn PDF document text
    • http://zijemuviwovo.rf.gd/expanded_form_worksheets_for_3rd_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/best_online_video_er_any_site.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/83202345204.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_off0000d53a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD53A 5076 bytes
SHA-256: c069e3ada79b6e2936f46eb9c4cefc7a167d921f2a811e40460f0780b597d6d5
font_01_sfnt_off0000e6a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A8 10244 bytes
SHA-256: b363cca22333598a2ae421a3f24cbb5c8b0d330c025e83cd3880f125d949b489