Malicious PDF — malware analysis report

Static analysis result for SHA-256 30cafbd6cbff941f…

MALICIOUS

PDF

45.9 KB Created: 2020-11-05 20:34:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 594c99900737b4f607a786f22249387a SHA-1: 3da6e115fbd37a8add11956d00ba16bffc12f17f SHA-256: 30cafbd6cbff941fe7563b59f6087492860be648812b213d8aab341e2bf1917b
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/123?keyword=tuning+for+ukulele+bass PDF link annotation
    • https://ritibamubube.weebly.com/uploads/1/3/1/4/131437410/4978193.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/7971455.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/95b830f8-3674-4c59-aaf2-b0b71cf98ddf/8299160305.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/fokurukikedowibixu.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/list_of_general_abbreviations.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/61310814639.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf70c2ef-ef3e-4ac9-ba28-1f5699c4b5eb/govajuluzoje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b66bf357-953b-4308-845d-39d3bfadcdb4/rudrabhishek_mp3_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ac8869e-2c80-4909-87d4-0df53cbe0614/bus_9110_orly.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78c2fb52-3846-418f-ab04-11c8fb7fffa6/how_to_hack_khan_academy.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/aggressive_behaviour_journal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/668007d3-69aa-4078-a6e2-8b78ec6b85d0/silobusarisepepitasa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/064dfdde-72fc-42af-b809-daa4a19e273c/pulaski_county_humane_society.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_off00006dba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DBA 5088 bytes
SHA-256: 5f2e98b274c8d1732bb0f7ad7cd52d6067aeeefd542e93390e874a94179d2b60
font_01_sfnt_off00007f18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F18 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off000087a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87A5 10268 bytes
SHA-256: e955afe1a1e985e2445cdf657ce7fbdb4dce8a1a5673e2ff17749d2f77aa868c

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