Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e4d02e6b08ba5a1…

MALICIOUS

PDF

71.8 KB Created: 2021-01-31 22:12:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 97ab8136354e759cf4cf051da5048196 SHA-1: 5b92eb90dbd7fca33401402b59e20f6d32510e0a SHA-256: 3e4d02e6b08ba5a1982e1d188dcf1df4e6905eb15db241feeccf68f1503dec86
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://bologen.ru/123?utm_term=manual+screen+printing+machine PDF link annotation
    • https://cdn.sqhk.co/vemudumuxixu/ofQicGD/vampire_knight_netflix_review.pdfIn PDF document text
    • http://copyrightsupport-ig.com/48333104896wchu8.pdfIn PDF document text
    • http://studyweb.site/434761491549lrqr.pdfIn PDF document text
    • https://cdn.sqhk.co/kululojilo/KGmovhj/you_go_again_song.pdfIn PDF document text
    • https://wajovojov.weebly.com/uploads/1/3/4/6/134652085/ab1fcc52972d0f7.pdfIn PDF document text
    • https://cdn.sqhk.co/vajirasavuz/eiaiohi/fupemegin.pdfIn PDF document text
    • http://milanbeachs.space/hoverboard_charger_in_stores_near_me42fw4.pdfIn PDF document text
    • http://lighttravel-ng.com/circuit_maker_free_for_windows_xpzfcdw.pdfIn PDF document text
    • https://jilazokezabise.weebly.com/uploads/1/3/5/2/135296918/zadijav.pdfIn PDF document text
    • http://card2card-perevod24.site/noto_sans_symbols_powerpointosj99.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/widiku/neteziwuvovaxekezavon.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/18133319630.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/acknowledgement_format_of_project.pdfIn PDF document text
    • https://s3.amazonaws.com/wuzalugiseto/chasma_laga_ke_nagpuri_dj_song.pdfIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/tonofizixovunej.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_off0000db7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB7A 5352 bytes
SHA-256: 22f97b4a8c2be554e148355c3a803033f9eeacad72be8d1eb53ed5b779008f0e
font_01_sfnt_off0000ed8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED8E 10872 bytes
SHA-256: af80643fe8c54305fec43620c2dbd2e039dc6a86812000fb69f0a3eb8507fd61

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