Malicious PDF — malware analysis report

Static analysis result for SHA-256 85419f0efb30469c…

MALICIOUS

PDF

73.9 KB Created: 2021-02-16 21:42:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 51f2f2c58c1f983f419a93d5ad9b1ce4 SHA-1: 95c977458b57750cec9dc694802eef990f853414 SHA-256: 85419f0efb30469c532f42f54990477ed2eac99de6bb4bf2a325f738b52093fb
136 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
  • 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://seumenha.ru/aws?utm_term=just+listen+sarah+dessen PDF link annotation
    • https://cdn.sqhk.co/vosiwuli/hcIhbib/87114663129.pdfIn PDF document text
    • https://cdn.sqhk.co/dofubetu/fhdjiTD/turbo_league_discord.pdfIn PDF document text
    • http://cleanup-sale.site/504980274528li3j.pdfIn PDF document text
    • https://cdn.sqhk.co/minamojazi/9jggjgd/polaroid_originals_onestep_plus_vs_onestep_2.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/xufujofaleki/agnisakshi_serial_title_song_naa_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/toyota_corolla_verso_workshop_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/illinois_annual_report_form_llc.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/philippine_standards_on_auditing_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/volonazumoxefuwogukesezo.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/gavoxu.pdfIn PDF document text
    • https://s3.amazonaws.com/lotibabakuj/zazofumopopipafuwax.pdfIn PDF document text
    • https://s3.amazonaws.com/ligole/gupomuvesi.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/nowapeliwidabobuluwelix.pdfIn PDF document text
    • https://s3.amazonaws.com/fuzafuzeruwit/sites_to_free_movies_using_utorrent.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/39771714785.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_off0000e778.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE778 4904 bytes
SHA-256: 6efa2e98e810993304260a7f228c6b3fe6a03415ddc9adc56566dce2e7398471
font_01_sfnt_off0000f811.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF811 10184 bytes
SHA-256: 213de342e1e0431ba693ce0f9b4132c53da31fd500a6503459d5158e063e2e39