Malicious PDF — malware analysis report

Static analysis result for SHA-256 30bcf415aa1c97b8…

MALICIOUS

PDF

67.4 KB Created: 2021-02-15 03:38:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7be8d5f006ef7edfdc893c4871de12ff SHA-1: 1b429f2d52cfffde10c6fa6f3e3abc82f4fb4749 SHA-256: 30bcf415aa1c97b8cc9fb3e35e3c15a0f9addd5d81ba02168e9943fdc1e4dd6c
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wix?keyword=the+icu+intern+pocket+survival+guide PDF link annotation
    • https://nenilinuda.weebly.com/uploads/1/3/1/3/131383514/6547459.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478430/normal_5fdd5c525d4ec.pdfIn PDF document text
    • https://cdn.sqhk.co/ripalufix/igeO4ih/how_to_make_a_ultimate_chocolate_cake_recipe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410962/normal_5fdc4e8639997.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460230/normal_5ff330c84d66f.pdfIn PDF document text
    • https://pabixiwirixe.weebly.com/uploads/1/3/1/0/131071256/rapepadi.pdfIn PDF document text
    • https://gawakugoful.weebly.com/uploads/1/3/4/7/134757428/saroxugufa-gibax-padosidoxole-xuxero.pdfIn PDF document text
    • https://xopavomubikun.weebly.com/uploads/1/3/4/8/134879687/a80c2f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445119/normal_6015a194f3abd.pdfIn PDF document text
    • https://cdn.sqhk.co/binebelezux/54igie3/magic_sing_bluetooth_karaoke_machine.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/gafedupeba/bracket_positioning_in_orthodontics.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/buffy_eucalyptus_sheets_review.pdfIn PDF document text
    • https://s3.amazonaws.com/makumapikeze/forever_and_one_helloween_piano_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/the_impossible_girl_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/gudukupir/osrs_brine_rats_slayer_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/kuzujazuzu.pdfIn PDF document text
    • https://s3.amazonaws.com/tonisefoteka/gopufitazijunozavibuto.pdfIn PDF document text
    • https://s3.amazonaws.com/dosipive/43371016547.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_off0000c877.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC877 5408 bytes
SHA-256: 980119e6812f6b8409b024ea266ab6408fb41a06260da91767107fe6e68ebe76
font_01_sfnt_off0000dadd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDADD 11872 bytes
SHA-256: 0d6d21be9327d2a598fe6548a346acd17db669e1704dd79a944115d65028d00f

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