Malicious PDF — malware analysis report

Static analysis result for SHA-256 be1b634ccdc2abfa…

MALICIOUS

PDF

46.9 KB Created: 2020-10-28 01:54:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 450d3264ca23405f6cfc19451a35f5df SHA-1: 9f1917fc21379d62a55576f8ea129b70fae904fe SHA-256: be1b634ccdc2abfacd8d1a2df8b6cd897bd4296d453c0aadc381312ad6102ca7
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://cctraff.ru/strik?keyword=casio+g+shock+wr20bar+price+in+india In PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/xesukozumiver.pdfIn PDF document text
    • https://narodejezagog.weebly.com/uploads/1/3/3/9/133988416/472019e.pdfIn PDF document text
    • https://genamimiwovem.weebly.com/uploads/1/3/1/6/131636881/8758575.pdfIn PDF document text
    • https://vonubaxuted.weebly.com/uploads/1/3/1/4/131452839/5613040.pdfIn PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/jazisobus_pewuf_gufedironi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374710/normal_5f8ba238d3ece.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374013/normal_5f93d678503ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367927/normal_5f8f48c4ac3d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401515/normal_5f9788688acb0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366398/normal_5f87668b7910b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366055/normal_5f8a2c92df05e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365621/normal_5f86f9d237dc9.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007570.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007570.bin)
    • https://cdn.shopify.com/s/files/1/0432/0015/1707/files/stick_wars_unblocked_flash_games.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0913/6024/files/macys_liquidation_bstock.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/5647/8370/files/download_apk_google_play_dari_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2632/0024/files/acceleration_speed_speed_and_time_worksheet_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/0910/0957/files/69728300872.pdfIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/alignment_test_on_lathe.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/95181423164.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzufexarevima/catering_business_project_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7c6774b-d5c0-4dbd-8795-02ed47c355e6/47096074961.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14c23185-ec57-4d45-8be9-0afd1ec1e297/northwood_carnival_glass_price_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a379e876-686f-4ef4-a534-c1dff836db69/geliroven.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b94748b2-0af4-4792-9e23-07081558c6c5/juvixof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5b33403-e715-438e-a7a2-eb6542b6eed1/99586506771.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 extracted file (font_00_sfnt_off00007570.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007570.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7570 5780 bytes
SHA-256: 3b4f69cd40bdcb8574d138fcc896f248ae0796cc7af15b0545848dd7a724323e
font_01_sfnt_off00008919.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8919 10976 bytes
SHA-256: 2679cb8cb0961fd90a761b81a27eeebfe33d95b6438215ad24416381327db001