Malicious PDF — malware analysis report

Static analysis result for SHA-256 25ec15649505b4f5…

MALICIOUS

PDF

71.8 KB Created: 2021-03-03 21:59:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 90df42893e00664f2ba34a069fa66a93 SHA-1: 9f46168c4d7f210c4d219c405fe44ab75c24a963 SHA-256: 25ec15649505b4f58145506d6368d56de8df638b22707d4db15ed788321c4932
136 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
  • 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://vilenefex.ru/aws?utm_term=what+is+the+xfinity+wireless+router PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4530846/normal_5fee3bae5ad48.pdfIn PDF document text
    • https://cdn.sqhk.co/murafabu/GihOZig/26163503042.pdfIn PDF document text
    • http://raifaisentapp.online/dezopagibife841zw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377380/normal_603cfa0047118.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406216/normal_5fee8fb4f3ae3.pdfIn PDF document text
    • https://cdn.sqhk.co/duponetix/iczxOii/34525225367.pdfIn PDF document text
    • https://cdn.sqhk.co/xetilibul/cljiiiL/go_to_sleep_my_little_baby_song_lyrics.pdfIn PDF document text
    • https://cdn.sqhk.co/difejekexe/Ui9MChh/business_plan_ppt_template_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471253/normal_601217885f840.pdfIn PDF document text
    • https://cdn.sqhk.co/poronujefino/jjhjjey/sleep_sounds_list_alexa.pdfIn PDF document text
    • https://cdn.sqhk.co/xeloxilava/hidF41b/kewoxogotefuga.pdfIn PDF document text
    • http://creampiepow.club/bhojpuri_film_linkc5p5b.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/rewepalazamiso/korean_visa_application_form_2018_fillable.pdfIn PDF document text
    • https://s3.amazonaws.com/mijumomub/ecosystem_biotic_and_abiotic_factors.pdfIn PDF document text
    • http://retipike.rf.gd/vixezesamopewajalorivule.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_off0000dced.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCED 5128 bytes
SHA-256: 3a16424561d4991d860d60049410f534130f18de00fbeb3943421f7e6225c209
font_01_sfnt_off0000ee7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE7F 10428 bytes
SHA-256: 91cf750ecd0d35d785f1af36cc5838d2b7b32806e5885b03eb6fd7787faa45b2