Malicious PDF — malware analysis report

Static analysis result for SHA-256 a785c91cee1405c6…

MALICIOUS

PDF

72.3 KB Created: 2021-02-26 08:40:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6fd7d3bbb3c272a01dec5de439fcf367 SHA-1: 8650a7414e2493216e62412e0504f0c391216e1d SHA-256: a785c91cee1405c6ff1ff67ed84f735b96f87d411963e543bf83bb8c78a44103
144 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
  • 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://baarspo.ru/award?keyword=the+sword+of+summer+google+books PDF link annotation
    • http://forexgeeks.net/etiquette_of_marriage_in_islamkh47d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490519/normal_5fdac97bdf38e.pdfIn PDF document text
    • http://moreprodukti.com/minevgf8cs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470678/normal_5ff92ba175cbb.pdfIn PDF document text
    • http://rrrrkkkkk.space/bushnell_tour_v3_dansk_manuala0g04.pdfIn PDF document text
    • http://maska-respirator.com/oceanhorn_2_switch_date_de_sortie39nby.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471488/normal_5ffb833c8eb74.pdfIn PDF document text
    • http://gebatuvarak.66ghz.com/vakalaxiv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486982/normal_5feddf018e447.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374986/normal_5fd978204d93f.pdfIn PDF document text
    • http://look-hotel.com/mifaforef3kp2t.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/wofaxil/jumosiwawa.pdfIn PDF document text
    • https://s3.amazonaws.com/benuka/redbone_childish_gambino_song.pdfIn PDF document text
    • http://xawisis.rf.gd/are_ikea_skillets_oven_safe.pdfIn PDF document text
    • https://s3.amazonaws.com/lemefofutomapox/88735235548.pdfIn PDF document text
    • http://rigirulame.epizy.com/lajamodigoxa.pdfIn PDF document text
    • http://kazowaz.rf.gd/86926099701.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/nufotoje.pdfIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/bink_s_sake_violin_sheet_music.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_off0000de32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE32 5356 bytes
SHA-256: 722d07784bbb190d1cbe44718bda3b4bd62b62dc86a28fbd31d1dcfb21270afe
font_01_sfnt_off0000f053.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF053 10476 bytes
SHA-256: 91ad1b826ee28aa188dc86e0095a0050a6cac2127d094a23ada325a519635f9f