Malicious PDF — malware analysis report

Static analysis result for SHA-256 624d90cc93dc3edf…

MALICIOUS

PDF

43.7 KB Created: 2020-10-25 18:06:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-29
MD5: 89cb3aba39c9f0c70594c7e08dd1a705 SHA-1: 5c29fcf4437362f55b0281512b49a429a57d287d SHA-256: 624d90cc93dc3edff474540580d9366f0fb1b96a2c5f8dfa26d66344f35dc884
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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://ttraff.me/123?keyword=microsoft+project+server+2020+licensing+guide In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/ragejufa/telecharger_journal_ennahar.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/accounting_for_intangible_assets.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/primeros_ensayos_augusto_comte.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/54606006107.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/34535929032.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/bangla_comic_golpo_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/budismo_dionisiaco_claudio_naranjo.pdfIn PDF document text
    • https://s3.amazonaws.com/megulu/analogies_test.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/sedentarismo_oms_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/58303701996.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/30421699152.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/98059915083.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/297cb1bb-af1b-48f5-bcd5-929dbce8c93e/read_citrus_manga_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffa4b885-f503-4b48-92a2-f30ef65d44c6/istasyon_teknii_slayt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba0a99eb-e5c8-483d-b764-764b933f3c93/42887692097.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cd0ea17-9d5e-416e-a31e-9d85f7e9dee7/delowip.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/72077938148.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/91634144018.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/limaputawu.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/ancient_history_books_download.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/internet_of_things_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3183/7344/files/nonfiction_reading_practice_grade_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/6997/4949/files/cebu_to_bohol_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7680/2967/files/drop_baby_drop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/5421/7388/files/xikanizopaxika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9014/4160/files/dojagamitip.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D92 5408 bytes
SHA-256: 05da0aaec0b1ca10ac2ec042215ca54f4db441d92d6a6dc435457cd8cfd279dc
font_01_sfnt_off00007021.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7021 10440 bytes
SHA-256: 7c91fea532c3f9e1f4beac2df6e7b696a8d0adaa9c9809f1e3349cc749167f7d
font_02_sfnt_off00009270.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9270 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230