Malicious PDF — malware analysis report

Static analysis result for SHA-256 5aa053927f81a729…

MALICIOUS

PDF

64.3 KB Created: 2020-12-23 06:48:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: f6558ce1cd0c972bebc09a48e13191cb SHA-1: eca11b68fe71e72c2e6b5a1d7124f1be3a833fed SHA-256: 5aa053927f81a729304c374ac51be773ff7db3f5cb859f274128b208efdc52e8
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://gettraff.ru/wb?keyword=origami%20crane%20step%20by%20step In PDF document text
    • https://dixitelenamipum.weebly.com/uploads/1/3/4/3/134380202/sexuxiv.pdfIn PDF document text
    • https://dezekebewefe.weebly.com/uploads/1/3/4/7/134731304/rofan.pdfIn PDF document text
    • https://risibazizugati.weebly.com/uploads/1/3/4/7/134710005/zedine.pdfIn PDF document text
    • https://moduruwili.weebly.com/uploads/1/3/2/7/132710657/08923474a.pdfIn PDF document text
    • https://wegotutitupal.weebly.com/uploads/1/3/1/4/131453182/355e077bc527c78.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/e8e6a843-13ce-4ff1-98ad-3caa23c313f2/54866792953.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17d42253-6640-4d5c-bfab-4bdc79f9d8cf/3019862806.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60494e1a-caca-468a-87f1-57e00063eb4b/fallen_lauren_kate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01f084cc-0a28-49b0-9b67-794bd04d1f96/28514804764.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0bc293dfdd95b60d440d6/t/5fc2ab399d79364840e4def3/1606593338947/blue_ridge_bicycle.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cad933ca-8b0e-4601-b43f-bb40b67ca43b/22467873494.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe47d99b1ed03538a7b6cb/1606305753406/selena_y_los_dinos_hat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a76e9bbf-c405-41b5-8549-5e3acb2d213a/how_to_convert_dbm_to_mw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08e9706a-a756-47ce-889b-c1d4f1aa2e58/was_buddhism_monotheism_or_polytheism.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcef9fc246a5d73f4749954/t/5fd15cb90f163860c7a0b73c/1607556282143/paper_mario_color_splash_walkthrough_green_energy_plant.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_off0000c0c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0C0 5488 bytes
SHA-256: 98434b3c78814f7c1ed1636ad3e2ba43291a7731faca82b4f32010b3334201d5
font_01_sfnt_off0000d358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD358 9728 bytes
SHA-256: 19e1d440b53982994dbb7e1d808f84b7516e3e959711b51790e53b39ea540c10

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