Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3023274019b49a9…

MALICIOUS

PDF

83.8 KB Created: 2021-01-05 23:42:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 9ac8b4f77e4173212ca45638e144e802 SHA-1: 3c96060fef7efa1bf054ae55ba6c5c42888d3d01 SHA-256: e3023274019b49a95851a80c998a8a9bcb8a04a4454dbcf852b22e7407553f10
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://cctraff.ru/shook?utm_term=beef+packers+definition In PDF document text
    • https://pelosewedi.weebly.com/uploads/1/3/4/7/134753512/jujaxosuril-zopoperimove.pdfIn PDF document text
    • https://rawesare.weebly.com/uploads/1/3/3/9/133997405/5492098.pdfIn PDF document text
    • https://fenejetamop.weebly.com/uploads/1/3/4/6/134697978/7252948.pdfIn PDF document text
    • https://dudikojegak.weebly.com/uploads/1/3/1/4/131406444/misovikisajifek.pdfIn PDF document text
    • https://kidofepakanuzok.weebly.com/uploads/1/3/4/0/134096393/tusenirowofe-vedupe-sizadi-sarazinexewuli.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6d22744-21a5-4823-b000-4d015727275a/go_fruit_smash_apk_pure.pdfIn PDF document text
    • https://s3.amazonaws.com/fevobelijogal/baal_veer_video_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/literature_review_on_social_media_marketing.pdfIn PDF document text
    • https://s3.amazonaws.com/wezukep/android_binder_ipc_framework.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98eb88b3-4ee3-4bb3-98f3-3ef68456b702/bogeveb.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/the_perfect_match_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/nagev/determining_probability_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/71190645162.pdfIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/vampire_academy_2_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/oxford_etymological_dictionary.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_off00010960.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10960 5232 bytes
SHA-256: 7f8ce8cec87e7d89f6e838ca2bade03654fbb6d30a287c89c02680524cdd79a3
font_01_sfnt_off00011b43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B43 11648 bytes
SHA-256: f0589f92005068095a2aeac42c53142f429faed1b02d90dcf4ffdf9d2570d1e2

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