Malicious PDF — malware analysis report

Static analysis result for SHA-256 af65d878dfdd2164…

MALICIOUS

PDF

70.3 KB Created: 2021-03-01 19:53:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ac20f5737eb78806e00d0857ff8e8048 SHA-1: 0600900293a5022cc086e9044887a1eb795a398a SHA-256: af65d878dfdd21649b90c124d6e31e5e4fb7620aee5ac9176135b9f711d20111
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pelibifir.ru/wix?keyword=holt+handbook+fifth+course+teacher+edition+pdf PDF link annotation
    • http://olymp-trade.top/allusion_yahoo_answerrins3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505699/normal_5ffb619d342ab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408992/normal_5feb9f6835ea6.pdfIn PDF document text
    • https://cdn.sqhk.co/lizasizova/hggGjeZ/weather_forecast_live_doppler_radar.pdfIn PDF document text
    • http://mojamozegibobav.22web.org/vajawivusoda.pdfIn PDF document text
    • https://cdn.sqhk.co/guxifunuris/bgfgeor/kingdom_new_lands_island_2_guide.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408475/normal_60097658a5375.pdfIn PDF document text
    • http://mbfsopg.com/gedagujopivimisifonelkvbw9.pdfIn PDF document text
    • https://cdn.sqhk.co/lepudijazur/dhcihjc/vabuxarolulewelarawe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485703/normal_5fecb72dba713.pdfIn PDF document text
    • https://cdn.sqhk.co/degavorofala/jnjaifI/the_walking_dead_season_10_episode_17_online.pdfIn PDF document text
    • http://calipshatngaccs1.xyz/liberation_theology_in_africa39ttp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tasobigadegef.epizy.com/synonyms_worksheet_for_grade_2.pdfIn PDF document text
    • http://modotiwavuw.epizy.com/90703480004.pdfIn PDF document text
    • http://joxumokuri.epizy.com/baxter_international_inc_annual_report_2017.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_off0000d740.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD740 5408 bytes
SHA-256: b8542ab4de37bd54ac7e8e59fe888a3a290108f594d5e9fddac465142c82cf67
font_01_sfnt_off0000e993.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE993 9932 bytes
SHA-256: bfcb6888c9979c26cbebd98312a614856418305e39250e5a7d3dd431e32ad27d