Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccf1921bec3c726a…

MALICIOUS

PDF

60.7 KB Created: 2021-02-20 03:07:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: e30d2b19a16e0d8afc0e5ca099ac546f SHA-1: 6a17061825482dcc07dd676ff5388bd43ec7c817 SHA-256: ccf1921bec3c726a917e9909bc43e702dac7a7a5f8496f3092ed94df4f136739
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://crophysi.ru/wix?keyword=otis+spunkmeyer+cookie+oven+trays In PDF document text
    • https://cdn.sqhk.co/dixejetafap/OMyMjhi/papixujoperosonimaxig.pdfIn PDF document text
    • https://cdn.sqhk.co/jadepibake/jRgii8O/gallery_63_auction_tv_show.pdfIn PDF document text
    • https://cdn.sqhk.co/pozuwifofub/dXgjibs/brhe_berry_channel_13_news.pdfIn PDF document text
    • https://cdn.sqhk.co/jivonotiso/iiigSKD/download_great_battles_medieval_mod_apk.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/fatikonavori/wujaxotewetulunefek.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/vunegovosupafaziko.pdfIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/zevotumurimoxolojedavati.pdfIn PDF document text
    • https://s3.amazonaws.com/woneketelak/catherine_ponder_supercharged_affirmations.pdfIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/wishful_drinking_carrie_fisher_watch_online.pdfIn PDF document text
    • https://s3.amazonaws.com/wujafivabipo/rokotizabi.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/adding_dissimilar_fractions_worksheets_grade_6.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/harmonize_atarudi_video_dj_mwanga.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/759357989.pdfIn PDF document text
    • https://s3.amazonaws.com/toniseligiwuzux/55467697966.pdfIn PDF document text
    • https://s3.amazonaws.com/sojenozap/dewalt_atomic_20v_max_drill_review.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_off0000b4c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4C1 5300 bytes
SHA-256: 34cab5525796ab412b12bed06306ec22e2d29ced5185d1a097b4fe43b2e4fbcd
font_01_sfnt_off0000c6c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6C0 9208 bytes
SHA-256: edf5dd4fdcbec42cb7db9589efd5721ac779f461d7707ab7c1b504039c137528