Malicious PDF — malware analysis report

Static analysis result for SHA-256 0882d756487addf9…

MALICIOUS

PDF

65.1 KB Created: 2021-01-24 22:42:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 71390bc6ddd501bbd720006b1f3b68a6 SHA-1: 36c6803a488dd46a7770af612149283cdc86fb94 SHA-256: 0882d756487addf9f9a43c1570735301725766429278227bb28cb0338e031a47
194 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
  • 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=unit+3+resources+a+turbulent+time+answer+key In PDF document text
    • http://bedusopuzal.22web.org/halloween_bingo_template.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/vitelitubovuluj/60725027880.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/13011393841.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/celtic_font_free.pdfIn PDF document text
    • https://s3.amazonaws.com/genedesowul/adventurers_league_season_9_player_s_guide.pdfIn PDF document text
    • http://xegukamadoso.epizy.com/quarterly_report_meaning_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/cerebral_av_malformation_symptoms.pdfIn PDF document text
    • https://s3.amazonaws.com/xalasawu/forced_factory_reset_sony_android_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/bogeguva/96665470693.pdfIn PDF document text
    • https://s3.amazonaws.com/nagudo/java_scjp_questions_and_answers.pdfIn PDF document text
    • http://jujonejetas.epizy.com/pretty_woman_roy_orbison_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/40876586047.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/auto_da_fe_tennessee_williams.pdfIn PDF document text
    • https://s3.amazonaws.com/zopenave/all_netflix_original_series.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/miterir.pdfIn PDF document text
    • http://gefetela.epizy.com/ielts_reading_test_4_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/botekorudazi.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/platform_15_thorpe_park.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_off0000c01d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC01D 5496 bytes
SHA-256: e013259aefd9fdddcd40c1b831aedb7c9f9cdd20a124d27f36c7c9fd35aa67e5
font_01_sfnt_off0000d2d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2D5 10084 bytes
SHA-256: c0a1db7b189e3e012a404b5134deff2218f0d5a57158879ec99628b0eaa20a60