Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f24865481ee1f0c…

MALICIOUS

PDF

40.7 KB Created: 2020-10-04 12:50:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 42a527d6bb2dcc2c4c51513936acca51 SHA-1: f06be599d6a2a01a6b9d37c5455967fca47b99fe SHA-256: 6f24865481ee1f0c625b7a4d4aca1e8e3977c875c1b3e08c6a87e2e351bd4469
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://ttraff.link/pify?keyword=david+dorian+ross+website In PDF document text
    • http://migifowa.globaltesoltraining.org/uploads/1/3/1/4/131407178/0b425a848f905.pdfIn PDF document text
    • http://files.jbntitle.com/uploads/1/3/1/3/131380786/kiwuwoka.pdfIn PDF document text
    • http://lagaremup.memorablemomentsbymichele.net/uploads/1/3/0/7/130775192/najaxemazavi-mukir-wefutelozezuvuj.pdfIn PDF document text
    • http://files.spachurches.com/uploads/1/3/1/6/131606526/19417da3937c.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/a390d364-2f20-4ea7-b510-e10414374194/kogutoxakepava.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ec2b564-5599-440c-a5ca-682e8417b400/votagegemure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8603/6635/files/blu-ray_lg_bd550_manual_en_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5731/0615/files/dumaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7166/7352/files/idle_heroes_soul_stone_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d686686-df37-4ba8-a1ad-16e3a9571c33/72508425070.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7afd288-9b72-4787-8ce7-222e6b92315f/19651834610.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2aaf19d5-ba6a-455a-9437-c3fdf44d86c5/tezufiwipudon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6404fa51-45a4-480f-8f4b-03c8390ed14f/ruxadefume.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b70c528-435f-4c97-8673-5157fb669135/42437628838.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_off000060ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60AE 5076 bytes
SHA-256: 4cf9dbab785a4f873bb8a38315198833d48e422eea11fe1bf3cf7b0ffdd94ffa
font_01_sfnt_off00007217.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7217 10704 bytes
SHA-256: 960a11c95ceafbf8def7c123aead89541309e4ce581f4d2e0fd83917ef3028e4