Malicious PDF — malware analysis report

Static analysis result for SHA-256 63f44e4090509792…

MALICIOUS

PDF

66.7 KB Created: 2021-02-05 11:20:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 766c6bb072d5fbe785aea965fea319ab SHA-1: b2e4c5e5b1d2068ff9eab10909c98091c047bf6e SHA-256: 63f44e4090509792492ef0ebcafe67e65caa8590fcc67c44f859175a627451c3
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wb?keyword=excipients%20guideline%20sodium In PDF document text
    • http://216tilford.com/susidaosc9.pdfIn PDF document text
    • https://cdn.sqhk.co/zujubiviv/ajggegd/desenho_da_masha_e_o_urso_em_portugues.pdfIn PDF document text
    • https://cdn.sqhk.co/melipetoluf/bTL3hhJ/jujunidawilepow.pdfIn PDF document text
    • https://cdn.sqhk.co/ketalidukepi/Tgchijh/smart_dealer_products.pdfIn PDF document text
    • http://idealica-italiaufficiale.website/11685360325325s1.pdfIn PDF document text
    • https://cdn.sqhk.co/sifajoxojif/iP2geii/391_write_in_words.pdfIn PDF document text
    • https://cdn.sqhk.co/xavonepez/ihhiibe/xofas.pdfIn PDF document text
    • https://cdn.sqhk.co/zudatona/hjje2hf/infection_control_today_wiki.pdfIn PDF document text
    • http://iranianvc.com/stephen_levinson_pragmatics4e4rp.pdfIn PDF document text
    • https://cdn.sqhk.co/raxoxawupej/hgiihfE/wewagelifamejodapisopezow.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/kumasala/46821943465.pdfIn PDF document text
    • https://s3.amazonaws.com/jolozidabi/colony_comparison_chart_answer_key.pdfIn PDF document text
    • http://davojuke.epizy.com/3961439408.pdfIn PDF document text
    • https://s3.amazonaws.com/poguvelefa/36046088057.pdfIn PDF document text
    • https://s3.amazonaws.com/rurovikejigibu/56222951783.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_off0000c937.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC937 5112 bytes
SHA-256: 9db97edd494b7432b87c5ab1e30cf40d8b6629cd22d0ffb7576612495de93bf9
font_01_sfnt_off0000da9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA9B 10352 bytes
SHA-256: 7ac1bafe882dfd466c6a31e55db042414024a150356ae263f10bcaf9809465ff