Malicious PDF — malware analysis report

Static analysis result for SHA-256 00b3e3c231acd934…

MALICIOUS

PDF

49.5 KB Created: 2020-10-28 18:59:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0369b2e38ac8d66c9549f57a90a18d6d SHA-1: 6e037356d558edd67225eca23d2d842d7ae73314 SHA-256: 00b3e3c231acd934c5e6355b605312d420b28427f69b6974231f3f2a9c2d2b68
202 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ggtraff.ru/123?keyword=roll+a+joint+apk+hacked In PDF document text
    • https://komamopiragi.weebly.com/uploads/1/3/4/4/134444029/dagivezajuju-favixe-jedarawiwojele.pdfIn PDF document text
    • https://saxejuwujare.weebly.com/uploads/1/3/4/4/134448786/dofovuzorotamezudu.pdfIn PDF document text
    • https://sisodiwitamusoz.weebly.com/uploads/1/3/2/6/132681746/duwiwizafede.pdfIn PDF document text
    • https://mapuxotegudu.weebly.com/uploads/1/3/4/3/134356271/wagamojevagotek.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/3513/9487/files/pdf_reader_apk_for_android_5.1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7739/2794/files/surfboard_sb6141_status_lights.pdfIn PDF document text
    • https://s3.amazonaws.com/tigovatolis/shanghai_metro_map_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/tifuwuw/47930232324.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/ultimate_history_of_video_games.pdfIn PDF document text
    • https://s3.amazonaws.com/jadere/childhood_and_adolescent_development.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/blessed_assurance_sheet_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/soal_osn_biologi_sma_2016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3771/2806/files/arduino_basic_programming_language.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68c5f647-1807-420c-a72f-92331cca8e6a/tovipawudezuzelusiwapo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d8ec307-99f4-4744-aa91-d1131024f637/apache_spark_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0284602-8bfe-4ef4-b29a-12ba977458d3/vumusoxa.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/labedizit.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_off00008312.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8312 5036 bytes
SHA-256: 061d601a3228b27e1b9aad77e93a35f2cd3e8c73a012fd37bdf60f0d3cb93ffa
font_01_sfnt_off00009439.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9439 10928 bytes
SHA-256: 5400d056d31ee84358a65dfabb2d0e2e59bdbe5cc610ea116f3bcae951e8d6d8