Malicious PDF — malware analysis report

Static analysis result for SHA-256 136e659e2ecc3fff…

MALICIOUS

PDF

72.6 KB Created: 2021-02-27 17:59:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 127914c107b537fdef029da7f067fb6d SHA-1: 59db964d971b1cd367996f3ecc2bd46edf24a15f SHA-256: 136e659e2ecc3fff2f547d9b2a67ab0fa7cb36b166d7cec613b3b573784cfcab
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jottigo.ru/award?keyword=google+maps+timeline+not+working+2021 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4459341/normal_5ff3b8de8971b.pdfIn PDF document text
    • http://lofokumado.22web.org/interesting_facts_quiz_questions_and_answers.pdfIn PDF document text
    • http://bellissimo.online/bpsc_assistant_online_form_2018bi5zr.pdfIn PDF document text
    • http://fisidijomufuto.22web.org/17237377045.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/buganabowumujef/bangalore_days_songs_kuttyweb.pdfIn PDF document text
    • http://zadedasex.epizy.com/tatevamanerokixegobuw.pdfIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/cavernous_malformation_brain_gene.pdfIn PDF document text
    • http://punegejofuj.epizy.com/78044226540.pdfIn PDF document text
    • https://s3.amazonaws.com/redegelesibif/today_hourly_weather_report_in_chennai.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/bowlers_journal_ball_guide_2017.pdfIn PDF document text
    • http://fusifovizit.rf.gd/vivaxakibedaxu.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_off0000df7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF7C 5652 bytes
SHA-256: c8f525a6c301aca81d4ff422d9771cd4b7fdb90992cc902cfbb27cba07cdbe98
font_01_sfnt_off0000f2bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2BB 10204 bytes
SHA-256: b55390d6567a6c77208bb526e4f573bddea0c43b718eaaf9c040fee554c466ae