Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f4a77d16c7a4271…

MALICIOUS

PDF

83.9 KB Created: 2021-02-17 03:56:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 430d450e6c94c418a3bef33f59fb34bd SHA-1: 5aaa9f4f4e779f77a900272d4faf4a1edbb19e5e SHA-256: 4f4a77d16c7a4271d93ace38d91408027fda0724c1782e4791603494a0829ba0
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://druttle.ru/wb?keyword=continuidad%20de%20parques%20resumen PDF link annotation
    • https://cdn.sqhk.co/zogowefu/chaZifa/bedudikabitasabu.pdfIn PDF document text
    • https://cdn.sqhk.co/vidujubotaf/jgeFgeN/diba_true_sale.pdfIn PDF document text
    • http://ketousa.site/wallpaper_tumblr_cute_laptop2ks6a.pdfIn PDF document text
    • http://dudisukogonox.iblogger.org/77405437730.pdfIn PDF document text
    • https://cdn.sqhk.co/wofosavafiju/hOOajXA/dupisorurowuzuxid.pdfIn PDF document text
    • https://cdn.sqhk.co/faxidopudome/43Zjdr1/fipenesavezi.pdfIn PDF document text
    • https://cdn.sqhk.co/wexufenu/eZyiejc/8258855912.pdfIn PDF document text
    • https://cdn.sqhk.co/wixefawoz/i7qZicN/chartreuse_yellow_color_hex.pdfIn PDF document text
    • http://stnold.com/endnote_x7_free_download_full_versiof713r.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tesoxukezeziles.epizy.com/dewalt_router_attachment_guide_rail.pdfIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/85436209267.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/rixopifiged.pdfIn PDF document text
    • http://xuwixevuje.rf.gd/35743134338.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/casualty_loss_deduction_form_4684.pdfIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/owners_manual_ford_expedition_2003.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_off00010bb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BB2 5104 bytes
SHA-256: 4932dde047781e8ed9b141fa3450f1763b042a1336008d3febe2b55f7d34d754
font_01_sfnt_off00011cec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CEC 11220 bytes
SHA-256: efbc9835c4382653fe263205228c7763db4444c7a07ebb0713456ffd25cfbbfd