Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7b5621e520b7de8…

MALICIOUS

PDF

67.4 KB Created: 2021-02-11 13:27:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2a7b52ace9300587f7bca0f027bb6bb6 SHA-1: c776ad25afa2bc7e5fd187edddd570000cc99ab2 SHA-256: b7b5621e520b7de8aed59c6e8c140aa39853dda75583dcf3fbb1e3646a42eac7
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://bologen.ru/wb?keyword=ring%20doorbell%20install%20guide PDF link annotation
    • http://infonewsuk.site/google_play_store_app_review_guidelinesixw8t.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366365/normal_5fe240d9eefa6.pdfIn PDF document text
    • http://sipamuxagiporen.iblogger.org/jasper_report_sample_web_application.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459774/normal_5fde79c239568.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453100/normal_6016e4edd8000.pdfIn PDF document text
    • http://sushibara.net/terraria_join_via_steam_lost_connectionh5qyd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374839/normal_601f2497669ca.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/fokapikow/zijopaniwaravu.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/android_10_sony_xz2_premium.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/binodarizoxigogovopu.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/vcop_game_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jazamerijekufol/formal_dress_code_wedding_male.pdfIn PDF document text
    • http://xugonowelimije.epizy.com/xozarobesisivamaluf.pdfIn PDF document text
    • http://sesugemedolaf.rf.gd/nebizojobano.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/namie_amuro_love_story.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_off0000cb90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB90 5140 bytes
SHA-256: eb7512dc01884d4ed26a5ed825272eb91d02ccf97868563eacc812c77fcb1874
font_01_sfnt_off0000dd1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD1C 10520 bytes
SHA-256: 6c5fdcc12f7614a8ddca11564e99ebb3960036ee901460dbb32c2eff20ea2d12