Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc378e33dfc7f98a…

MALICIOUS

PDF

71.2 KB Created: 2021-02-26 16:32:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 9aa952f8ad29ee6c28f86f225dd5be4e SHA-1: 9c46738472c906c1652f404f3866b628dbb6a5c6 SHA-256: dc378e33dfc7f98a74c4fd9560cbd332be73f7b21668e9c45604f2d01226bed3
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/wix?keyword=healthrider+bike+manual In PDF document text
    • http://fukoramilani.22web.org/45989859607.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478950/normal_601410d34ebf2.pdfIn PDF document text
    • http://vesimawamom.66ghz.com/94537402602.pdfIn PDF document text
    • http://dazinifuxevoji.22web.org/501974063.pdfIn PDF document text
    • http://lnstagram-blue-ticks.com/60570760203umcyb.pdfIn PDF document text
    • http://wonder-ita.space/vewuvulovijoulm.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/jizubisetebof/autocad_underlay_not_showing.pdfIn PDF document text
    • http://wipupafe.rf.gd/ambili_song_onnu_naanayam.pdfIn PDF document text
    • https://s3.amazonaws.com/tevomenil/cuadro_medico_asisa_granada.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/ncte_jaipur_btc_application_form.pdfIn PDF document text
    • http://padezaj.rf.gd/meet_your_spirit_guide_meditation_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pilazi/telukazinuv.pdfIn PDF document text
    • http://gakelapirafit.epizy.com/amoled_wallpaper_android.pdfIn PDF document text
    • http://korimuf.epizy.com/powerpoint_themes_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/vuterijoze/48765948438.pdfIn PDF document text
    • http://pumuvezanasen.rf.gd/the_green_mile_quotes.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_off0000dba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA1 5052 bytes
SHA-256: b176c2ba1fe3281374683b8441f33caf486af46d4d423c018ac75abf2cf32895
font_01_sfnt_off0000ec99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC99 10476 bytes
SHA-256: a980b8b413e87699b91bee6939dd8cbeb890dd4dfdf58f252049426e76d027f2