Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c1161b2651bb1c9…

MALICIOUS

PDF

70.2 KB Created: 2021-02-20 22:40:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 938f8b88bc558c01626af67a89684a3b SHA-1: c73f55fc04cac096e155c3f6161d92fa7700cd40 SHA-256: 1c1161b2651bb1c9515ddce46fd254a345ace0f86fc1944cf9b8e86d28dcbea1
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://baarspo.ru/wb?keyword=what%20is%20weekly%20benefit%20amount PDF link annotation
    • https://cdn.sqhk.co/zirizowesaw/jighGPV/nintendo_switch_parental_controls_meme.pdfIn PDF document text
    • https://cdn.sqhk.co/folamudoj/dkYHLhh/70385801754.pdfIn PDF document text
    • https://cdn.sqhk.co/gimexigerub/o1PigEb/total_war_shogun_2_cheats_mac.pdfIn PDF document text
    • https://cdn.sqhk.co/texafikogot/jaxhahd/birthday_lyrical_video_maker_apk_download.pdfIn PDF document text
    • http://swiss-gear.shop/92743552878lqdx4.pdfIn PDF document text
    • http://detonic-official.website/kulorajojuxupazuzipive9yzov.pdfIn PDF document text
    • https://cdn.sqhk.co/ronofumito/n50cjdG/papers_please_ps4_store.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/minabiwa/8828581723.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/icc_chimney_installation_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/rodakarugupoko/sap_abap_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/golepe/appendicitis_in_pregnancy_rcog_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/les_endroits_en_ville_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/resume_template_for_fresh_graduate_malaysia.pdfIn PDF document text
    • https://s3.amazonaws.com/fulazelof/91234494450.pdfIn PDF document text
    • https://s3.amazonaws.com/kugelilizibuwum/xepola.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_off0000d4af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4AF 5324 bytes
SHA-256: 829493313f158c9d81a768d26d5988ae4fc327b3cc9a42de7ede364037ad4a3c
font_01_sfnt_off0000e6c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C5 10828 bytes
SHA-256: f47f4969fed2ed4488ad18d8d91af95b15eb2202152f918bb9ec9cf6ebc176b1