Malicious PDF — malware analysis report

Static analysis result for SHA-256 5544b944dc344650…

MALICIOUS

PDF

70.6 KB Created: 2021-02-23 06:05:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 58c49376bf1d2d7dbef35bb15323d750 SHA-1: ecde572edfe79dd30daeaf4db5d9606d2574502c SHA-256: 5544b944dc344650c30469e491d91547907a2ed800b934dc9a1583e92a49bdde
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://jottigo.ru/wb?keyword=what%20is%20the%20salary%20of%20a%20manufacturing%20engineer PDF link annotation
    • https://cdn.sqhk.co/ketusugedi/aLhhe2Y/bunker_basher_highest_point_volcano.pdfIn PDF document text
    • https://nesefutuderixu.weebly.com/uploads/1/3/2/7/132740375/1471080.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462093/normal_6019b3dca096a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452381/normal_5fcb36f05207b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383679/normal_600fcb50d7ea6.pdfIn PDF document text
    • https://cdn.sqhk.co/dorejewibiz/zBaHgdL/12699385732.pdfIn PDF document text
    • https://cdn.sqhk.co/menodotitit/ahdihwE/dining_table_set_for_4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408701/normal_5ff1830a1fbe6.pdfIn PDF document text
    • https://cdn.sqhk.co/bezofusipow/kicgdOa/god_of_war_battle_theme.pdfIn PDF document text
    • https://razitesewiwi.weebly.com/uploads/1/3/2/8/132815022/jariwipow.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/dukavunivifa/amd_radeon_r5_m435_driver.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/68423888463.pdfIn PDF document text
    • http://vomovawesojuti.epizy.com/bhavesh_joshi_superhero_free_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/baseband_version_android.pdfIn PDF document text
    • https://s3.amazonaws.com/xufoxorog/54114234126.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_off0000d5f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5F2 5412 bytes
SHA-256: 94f980941645c86c868c6b940f9db5da266297220dfd826c22e3a3c2de7f2bf4
font_01_sfnt_off0000e842.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE842 10888 bytes
SHA-256: 36e5e4c2365fa5031db71f8b92eafe44d54f128a3726fd60ee0a08fedee65ef1