Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c8db6cfc78495e7…

MALICIOUS

PDF

44.4 KB Created: 2020-10-03 03:02:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0c1d70240ee03132d921158f0ebf507d SHA-1: 2503e4ee752bc9c1c788d600b79516770aecb783 SHA-256: 1c8db6cfc78495e72d1ae0996f9acf434bd53a95688228bfdde9d67dbcf6ee42
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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/pify?keyword=italian+cypress+trees In PDF document text
    • https://site-1038988.mozfiles.com/files/1038988/xodalidunomefifuxa.pdfIn PDF document text
    • https://site-1036783.mozfiles.com/files/1036783/49338690803.pdfIn PDF document text
    • https://site-1038627.mozfiles.com/files/1038627/55735938264.pdfIn PDF document text
    • http://jaruledil.mrschaeffer.com/uploads/1/3/0/7/130775320/ridubaronarovolir.pdfIn PDF document text
    • http://wedosakib.tamaraleebeauty.co/uploads/1/3/2/6/132683078/ravelupafozixawo.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/1/0432/5752/8480/files/laurel_hills_park.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/5881/0017/files/gubebowarimebowog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1207/8243/files/rizosexakabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8536/4390/files/black_and_decker_hedge_hog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/275dbb7e-785f-45eb-b12d-17e89d020634/davumewuzemipun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad20d3b1-a9e0-4cb6-9e84-feed1021dd93/katesi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cff60639-99f1-496f-8407-b0c21e5e607d/vibebigitojagajax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/370e3cae-f272-4a19-86cf-d32e9296acb7/rawutoxukowuboli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12ccebe6-00da-420b-9709-aa3c54e27e54/wenitatadakojunomave.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_off00007237.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7237 4964 bytes
SHA-256: 0094b30235fe89e80578f22114d9e12bb5bf2ebea0101f45b05853a6e8edbbf0
font_01_sfnt_off00008332.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8332 9880 bytes
SHA-256: 984739d845daaa9f23b1c7298a7eed8055fe1aa78646aac7384b5da86ba1795e