Malicious PDF — malware analysis report

Static analysis result for SHA-256 670995d5230d0b85…

MALICIOUS

PDF

71.4 KB Created: 2021-02-27 12:51:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 4bd887284d7908c0adba7b43bd2405d6 SHA-1: c841f887f4d2540b72b94233812e2ceb1f7b9c35 SHA-256: 670995d5230d0b851826f892163eb2908236eb707a1d0cb69c580f9e4aae58d4
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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=how+do+i+fix+the+flashing+screen+on+my+lg+tv PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4467017/normal_5ff1397e0cc59.pdfIn PDF document text
    • https://cdn.sqhk.co/mapetidul/CgijhhZ/tirimixibajinewuxakapofar.pdfIn PDF document text
    • https://cdn.sqhk.co/sexuzoropa/N6nVVha/why_did_chicken_cross_the_road_meme.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366366/normal_6032631217d1b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490529/normal_5feb3a1017616.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368486/normal_5fd7347cb05d8.pdfIn PDF document text
    • https://cdn.sqhk.co/savunowudob/vx0sjdV/dilated_peoples_neighborhood_watch_lyrics.pdfIn PDF document text
    • https://cdn.sqhk.co/vojofarakiva/ijc0giZ/tujabewi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387819/normal_603865d87d81c.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/dofufiri/best_android_phones_2018_under_20000.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/glows_and_grows_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/nitidadufetenu/aashiqui_2_all_song_djyoungster._me.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/lepovodizidobapuxitibaziv.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/census_data_us.pdfIn PDF document text
    • http://dimaninerif.rf.gd/penatoworekiw.pdfIn PDF document text
    • https://s3.amazonaws.com/pojikovewijeja/butterfly_coloring_sheet_free.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_off0000dad2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAD2 5720 bytes
SHA-256: 026e929661b4a775efac704fca545f765523650a4fd690d13c451c2c9269beb4
font_01_sfnt_off0000ee3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE3B 9984 bytes
SHA-256: b1c42dffa1cffd669145135bd2b7f702281f8c1f912895cbf7c766bfcc9b0263