Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa1be60964aaae16…

MALICIOUS

PDF

59.1 KB Created: 2020-11-23 22:55:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: aef3e3587fd930817b24a0864ff2bb87 SHA-1: 0d224bf79403a156045a90d8bca77ef374000ffe SHA-256: aa1be60964aaae166ed2c6aabb06f55a723cef59bd9578a112d10452b49d78f9
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • 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://traffine.ru/123?utm_term=michael+kors+puffer+jacket+yellow In PDF document text
    • https://nuvosukive.weebly.com/uploads/1/3/4/7/134718285/04e75ed.pdfIn PDF document text
    • https://vaxeratomox.weebly.com/uploads/1/3/4/3/134397216/zopesugepi.pdfIn PDF document text
    • https://gifitutopa.weebly.com/uploads/1/3/4/4/134470147/9974080.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/mijedusovineti/36197863277.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/471fc4cf-bd1c-4e88-95d7-1c037c877edd/47614374414.pdfIn PDF document text
    • https://s3.amazonaws.com/nabifovu/vunok.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/start_again_song_13_reasons_why.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7813b721-faf7-4457-8422-c9e721ae3c3d/33552002281.pdfIn PDF document text
    • https://s3.amazonaws.com/jebupofedijakuk/cube_world_alpha_download_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/639d769f-ec49-4d83-a2c7-d88919a71d12/step_2_mailbox_541200.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebfcc3c6-4366-4e5e-8c1b-4995b311de8f/2000_chevy_camaro_ss_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/fawalixidovunixigesevaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b6e07e4-d2cf-43bc-bef3-227df9419b12/vonafezisudo.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_off0000a9b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9B4 5444 bytes
SHA-256: 64b07429ee74b2da81d92e6d9b2830ac1b45ad5e8e964ddaa7d5f5f51dca36fc
font_01_sfnt_off0000bc5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC5D 10488 bytes
SHA-256: db7dbfcffa8e493fe57f2f3665d23e53e36cba37c95b8167dd56f3dc90f3bd7d

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