Malicious PDF — malware analysis report

Static analysis result for SHA-256 c32776559c5a883d…

MALICIOUS

PDF

72.0 KB Created: 2021-02-14 21:12:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 8b89c68eb377d3791728e9b253ca6152 SHA-1: 6b98c86035f83f781b591b1a471669c4d3df258d SHA-256: c32776559c5a883dcdf6c299a746f1f70ebfd7553b6d46eea62b8487c99a5454
176 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://maypoin.ru/wix?keyword=hobo+8+unblocked PDF link annotation
    • http://baby-slings.ru/samsung_error_code_dc9o7iw.pdfIn PDF document text
    • http://dkblogin-de.best/wupudamirc38wo.pdfIn PDF document text
    • https://cdn.sqhk.co/zesonixiv/ihyPiar/block_craft_race_3d_run_racing_in_crafting.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451756/normal_600cefe83e898.pdfIn PDF document text
    • http://gprofights.ru/build_something_platform_bed4fgvl.pdfIn PDF document text
    • http://loginwithfb.site/audifonos_con_bluetooth2q8ub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410217/normal_5fd0ff461ef3e.pdfIn PDF document text
    • http://best-ital.fun/leluritovytza.pdfIn PDF document text
    • http://axecheat9.xyz/vupitisejezerijerupu4lgde.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/xutomoxu/24500928267.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/2mm_hygienic_wall_cladding_sheet_solid_pvc.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/zixobakegitokabevatos.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/deferred_annuity_sample_problems_with_answers.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d341.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD341 4560 bytes
SHA-256: 9fb38ecf7e3dec614eef0b654a4ed072e4239645f1adb5885faf66196e680613
font_01_sfnt_off0000e2c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2C1 9976 bytes
SHA-256: 527f54e3ea637f4b5b3df0f1af0bb515d1eed906ffad76a2594c2d87e9d1bb54
font_02_sfnt_off000104df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104DF 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176