Malicious PDF — malware analysis report

Static analysis result for SHA-256 4757226e903780e3…

MALICIOUS

PDF

71.8 KB Created: 2021-02-02 12:45:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: eae7841288a3ff89536aab297a9e23e1 SHA-1: d1f33ad87b45b2b94e0e4b400a09a76aa528df72 SHA-256: 4757226e903780e3fef59e9755a270a3ec66ef3533c9063bb9686cf9e31dba9a
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://jacksth.ru/aws?utm_term=game+guardian+8.+2.+1+apkpure PDF link annotation
    • https://cdn.sqhk.co/veludewozen/iiSIigW/botuj.pdfIn PDF document text
    • https://cdn.sqhk.co/kurafuso/hiQR9lT/tiles_hop_3d.pdfIn PDF document text
    • https://falufanimuv.weebly.com/uploads/1/3/4/3/134377488/muvijagave.pdfIn PDF document text
    • https://cdn.sqhk.co/sidogorego/jeicwPX/rivorovaxidosik.pdfIn PDF document text
    • https://cdn.sqhk.co/vibisidumes/blwehd1/27571112757.pdfIn PDF document text
    • https://zirakamu.weebly.com/uploads/1/3/1/3/131398357/vuruwe.pdfIn PDF document text
    • https://cdn.sqhk.co/febowozefu/ihiixEY/59467734759.pdfIn PDF document text
    • https://cdn.sqhk.co/xexisini/iYihhch/29462713751.pdfIn PDF document text
    • http://mmmmmme.space/integrated_science_questions_for_jhswxysg.pdfIn PDF document text
    • https://cdn.sqhk.co/feketukadoz/kjjUyTT/home_network_switch_box.pdfIn PDF document text
    • https://rejobasagiletez.weebly.com/uploads/1/3/4/6/134642313/lonejitubojakakum.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/fogibi/45874540620.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/file_manager_apk_tv_box.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/single_bed_fitted_sheet_cotton.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/twin_sheet_set_target.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_off0000d9c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C9 5572 bytes
SHA-256: f48c30c07f33dd5f4763fe056f756d3ced344fe7f0140f91138c048abb8aaaa4
font_01_sfnt_off0000ecb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECB9 11328 bytes
SHA-256: 09dbea6d61942c1c638986e84bad458fb99d65f5551fddf6594eb12f43a5f542