Malicious PDF — malware analysis report

Static analysis result for SHA-256 6320622afa419ba0…

MALICIOUS

PDF

69.3 KB Created: 2021-03-22 08:48:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 45272968280ff2afda63aa6fea45a6ee SHA-1: c2d71bead7f303e7590c19da443f270f750f66dd SHA-256: 6320622afa419ba0e45cc5a9f65e6f9717982edb2ed8ea00122717f88977a19d
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains an embedded URI and an image lure that redirects to the URL https://mezovuduw.ru/123?utm_term=badshah+full+movie+3gp+free. This URL is flagged as a redirector for free-download phishing. ClamAV also detected the file as Pdf.Phishing.Trojan. The ML classifier and heuristic firings strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://mezovuduw.ru/123?utm_term=badshah+full+movie+3gp+free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4486346/normal_5fc81ba3c70be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499984/normal_603654181913a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375351/normal_605529e51ff5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382201/normal_6057c85ee931c.pdfIn PDF document text
    • https://cdn.sqhk.co/piwewupovo/djjl7gg/green_poop_meaning_baby.pdfIn PDF document text
    • https://cdn.sqhk.co/pipujevi/njghadd/phora_to_the_moon_mp3_music_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378830/normal_5ff902d60d8b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465249/normal_6011773b72e55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409258/normal_6016917e61d0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446400/normal_5fe61e4188e77.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/bomupi/74959077325.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/41323865642.pdfIn PDF document text
    • http://lavaraf.epizy.com/29341986802.pdfIn PDF document text
    • https://s3.amazonaws.com/nefunupu/leropewu.pdfIn PDF document text
    • https://s3.amazonaws.com/seriposuj/investigation_report_conclusion.pdfIn PDF document text
    • https://s3.amazonaws.com/tomamujuf/momoland_dance_video_free.pdfIn PDF document text
    • http://ropomojakorano.rf.gd/16558621592.pdfIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/zisudilad.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/woragimudove.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/ariel_sylvia_plath.pdfIn PDF document text
    • http://kelopejawutan.rf.gd/juvomisosaked.pdfIn PDF document text
    • https://s3.amazonaws.com/mejobu/benny_dayal_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/8809230477.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_off0000d0ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0EA 5728 bytes
SHA-256: de5afcae2ac3698752a2493da2b44da9623502cb2c4fc394c1f5530bea5f6b88
font_01_sfnt_off0000e44b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE44B 10468 bytes
SHA-256: 2119c820df9db8f543e8801423e475df5c6ae6e2255832c4a586af4c4ecdba71

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