Malicious PDF — malware analysis report

Static analysis result for SHA-256 70ab3084bf893a1b…

MALICIOUS

PDF

71.3 KB Created: 2021-02-21 14:45:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3e986695a8b530c48de75a1207ecd073 SHA-1: 982c828c4440e543ab048ec72967049c9ee2fa17 SHA-256: 70ab3084bf893a1b0262db9d197f09f49d96a0305e4f5d6fa9858605bce210fa
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://jottigo.ru/wix?keyword=usb+loader+gx+not+ripping+games PDF link annotation
    • http://cosmostil.top/tuzuzakefawexs2qam.pdfIn PDF document text
    • http://testvvd.xyz/kiroputifejukibokix1or1l.pdfIn PDF document text
    • https://cdn.sqhk.co/rujiwujik/QheheNP/tejerivogiletupagekogak.pdfIn PDF document text
    • http://idealsit.fun/fovapagizefa1ln9f.pdfIn PDF document text
    • https://cdn.sqhk.co/vuvupewog/xiePjij/digidoc_pulse_oximeter_app.pdfIn PDF document text
    • https://cdn.sqhk.co/madagijoj/jdbjdIH/formal_caregivers_definition.pdfIn PDF document text
    • https://xovesoxak.weebly.com/uploads/1/3/0/8/130813458/8775701.pdfIn PDF document text
    • http://dilurijarejo.22web.org/apgar_score_sheet.pdfIn PDF document text
    • http://basiditdcf.space/cars_colouring_pagesd359o.pdfIn PDF document text
    • http://herss.space/zibupozumibegimaxixirafuvf00el.pdfIn PDF document text
    • https://cdn.sqhk.co/lexaxemiji/ghdDjcf/33667341908.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/mexijegedakol/sarulakizunufa.pdfIn PDF document text
    • https://s3.amazonaws.com/kubafezin/bezivabazefizupipimo.pdfIn PDF document text
    • https://s3.amazonaws.com/tumuzu/peneke.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/burura.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/abcd_movie_video_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gazijewevan/74027422351.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_off0000d9c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C0 5480 bytes
SHA-256: 5335cf0cf52a94c4a4245dd3b1629ca2276aab0cdd67a6ae5383fbcf75d5544c
font_01_sfnt_off0000ec4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC4D 10592 bytes
SHA-256: 1ea5c4b95f72e6dde3c559de5aadb85c23d87d4407b2a416c2a39d90ead9a289