Malicious PDF — malware analysis report

Static analysis result for SHA-256 92403e15e3c70752…

MALICIOUS

PDF

68.3 KB Created: 2021-03-08 16:02:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3976f20b8e5bcdc73bca9325f324ec7f SHA-1: 963afcfd3c669e25cd1bbff8aec5af2d25ab38bf SHA-256: 92403e15e3c70752b0e49ae6d29828dc582f24f2a544621ed1854e0dd78bee04
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://mezovuduw.ru/wix?keyword=taxonomy+worksheet+pdf+answers PDF link annotation
    • https://warubexe.weebly.com/uploads/1/3/4/6/134647576/bemop-rezajuloluke.pdfIn PDF document text
    • http://b0xberry.online/parental_apps_for_iphone_and_androiddeepy.pdfIn PDF document text
    • http://baltika-trans.ru/puzzle_hero_download_full_versionjbox7.pdfIn PDF document text
    • https://tixovokibena.weebly.com/uploads/1/3/4/1/134109053/a5f1a.pdfIn PDF document text
    • https://ronewomiz.weebly.com/uploads/1/3/0/8/130874064/jepano_vabukutitirelow.pdfIn PDF document text
    • https://wezisewego.weebly.com/uploads/1/3/5/3/135342704/jubekiba.pdfIn PDF document text
    • https://lafowujokunoro.weebly.com/uploads/1/3/0/7/130738997/8233073.pdfIn PDF document text
    • https://suterigegopos.weebly.com/uploads/1/3/2/6/132695321/nudejenulifezow.pdfIn PDF document text
    • https://ralunudedosamot.weebly.com/uploads/1/3/4/8/134856058/1232080.pdfIn PDF document text
    • https://rebavunegiluzu.weebly.com/uploads/1/3/4/4/134497465/duwonazof-bimis-tezelidi-wujunofub.pdfIn PDF document text
    • https://bozaxadoduzake.weebly.com/uploads/1/3/4/3/134306622/lozikusufutex.pdfIn PDF document text
    • https://gemiletux.weebly.com/uploads/1/3/2/6/132681217/fematewaxegexow_wibiredo.pdfIn PDF document text
    • http://dkmz1.club/ff12_zodiac_age_job_guidencai7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/57c2f90b-476e-4642-8997-e499f680847d/philips_universal_remote_code_for_arris_cable_box.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2205580-8dfd-4791-a2a2-ba73b5c7ef61/what_are_the_most_important_events_in_american_history.pdfIn PDF document text
    • https://s3.amazonaws.com/rowubunak/update_android_9_for_galaxy_a7_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/naxozelozude/jezokegolagefamu.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/zofug.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/megepelugawane.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/football_games_apps_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/xufinimimez.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/esmo_guidelines_for_rectal_cancer.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_off0000ceef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEEF 5524 bytes
SHA-256: 5ee6f4e71b28c744d3cc60536a384c958f2382efc598c1f63f9e43d6275bc7dc
font_01_sfnt_off0000e1ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1AD 10036 bytes
SHA-256: e69b3afa6523ba02cb134469facf700199aeec9b4ce3c29a9aa25c2fbece6fee

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