Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b71ce9ee6b0769a…

MALICIOUS

PDF

67.8 KB Created: 2021-02-23 00:05:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 076ac17749f2207333b0d01326d1fd49 SHA-1: 7f22795a95df0014d64074cf33080bf531a1967a SHA-256: 8b71ce9ee6b0769a6ed9e80a029f04c94ed4610d8bab8f10c7954274fe850f19
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/123?utm_term=tarot+card+online+deck PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4477910/normal_5fff6176ec895.pdfIn PDF document text
    • https://cdn.sqhk.co/bifoligi/g0oiiia/new_ringtones_and_notification_sounds.pdfIn PDF document text
    • https://xurebutira.weebly.com/uploads/1/3/2/6/132681359/fofivorireledov_latov_wudinogavi_doniwo.pdfIn PDF document text
    • https://jegiwagoxupida.weebly.com/uploads/1/3/1/3/131379361/b9640.pdfIn PDF document text
    • https://cdn.sqhk.co/xurunesijud/eifTieh/xcom_enemy_within_tactical_rigging.pdfIn PDF document text
    • https://cdn.sqhk.co/nigulavax/gAOibje/mountain_bike_shoes_flats_five_ten.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386092/normal_602deb786bae4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416332/normal_6025a4d1a5fd8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380854/normal_602b4a2107553.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500425/normal_5fc571a18bc93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496582/normal_6029227021d55.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/pululusodogi/how_to_solve_radioactive_decay.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/wezux.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/pezirexenunimofusaja.pdfIn PDF document text
    • https://s3.amazonaws.com/kewuxejikiwe/35393666907.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_off0000ceed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEED 4768 bytes
SHA-256: cf94548d94a2604b5bd2177a7fc88967bc6f278922317ce3ba07ce59dbbc13b7
font_01_sfnt_off0000df2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF2E 10720 bytes
SHA-256: 5bbd8a3e3b9ff4557e1314bc8f30c21dc739a9ed0f92fa6c5d8a8d57530a9b4c