Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa1066b8706d4c27…

MALICIOUS

PDF

76.8 KB Created: 2021-02-17 04:40:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3f501913fcb309be50070a1b0bf4634a SHA-1: edfed3c17005f6724a5c8543f3cd773cc082ea89 SHA-256: fa1066b8706d4c275a8294d3c7b074de6ae7a0b25ac922f304dbed3924632656
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://yafferge.ru/123?utm_term=daniel+kahneman+pensar+r%25C3%25A1pido+pensar+despacio+amazon In PDF document text
    • http://salestore.pro/alien_shooter_2_apk_unlimited_moneyog4d6.pdfIn PDF document text
    • http://prizinsta24.site/graffiti_art_spray_paint_costm4nhd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499300/normal_60220580957db.pdfIn PDF document text
    • http://msertis.xyz/reading_comprehension_strategies_worksheets_middle_schoolcpvkk.pdfIn PDF document text
    • http://zdorovienashevse.xyz/time_and_date_calendar_20188kr9l.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368238/normal_5ff5bbbe47fbd.pdfIn PDF document text
    • http://winoorama.website/formato_de_incapacidad_del_imss_edit2869x.pdfIn PDF document text
    • http://disclosures.space/xofifoxozopupipaxaw1fg77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369311/normal_6028eaf186d14.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/vonutavekip/26758809229.pdfIn PDF document text
    • https://s3.amazonaws.com/nawuvud/revajer.pdfIn PDF document text
    • https://s3.amazonaws.com/xukirizugukugi/33005187978.pdfIn PDF document text
    • https://s3.amazonaws.com/savifin/what_is_on_your_mind_facebook_quotes.pdfIn PDF document text
    • https://s3.amazonaws.com/rurovikejigibu/soar_analysis_template_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/bivanud/vezewofokulemojigof.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_off0000ebc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBC4 5660 bytes
SHA-256: f7bf80e11adce1cd6199cfe8ccb60598d96ce3c6d9a496736392fa9c4a03a897
font_01_sfnt_off0000fe54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE54 11464 bytes
SHA-256: 7ebec981d70e61add37259f8bb43d769825aab2d4c8a50e22cb7f83793a46aa6