Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc6a0e659dda01a4…

MALICIOUS

PDF

45.6 KB Created: 2020-10-30 00:00:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 5e639c3cf56950ff03c0528eb7e5a78f SHA-1: 8ec7558eba18cd8e9fd3e643b69b6e67ba5c3203 SHA-256: bc6a0e659dda01a4bf649324962cacb0a6d2fdd0713d034beba9136e4609f726
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://ggtraff.ru/aws?keyword=peterson+tree+guide In PDF document text
    • https://giledaxije.weebly.com/uploads/1/3/4/3/134312043/4a40b8d131f86c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366044/normal_5f8afc873be94.pdfIn PDF document text
    • https://misutinulil.weebly.com/uploads/1/3/1/4/131407711/2364961.pdfIn PDF document text
    • https://vozexipazaxa.weebly.com/uploads/1/3/4/4/134444785/fuvaruj_gajigutatexe_vugekitizas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383295/normal_5f9b3b65656d1.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/1/0268/7012/0634/files/mortal_kombat_9_fatality_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d91e97f7-2ca0-4e11-ab07-605cd383c9be/31618564031.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bae366c2-0e5a-4d2a-887c-fb4f636190be/learning_kendo_ui_web_development_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fb8bc99-39ca-492d-9afa-6858e974f8df/nupuvepizat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a6e9a4a-705f-4418-b9c5-e22ac68ee191/wowonoxegolorenitutabe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91beb912-89a7-4d0c-af43-a818853781aa/30682083840.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/appsc_group_2_syllabus_2016_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4082/3706/files/77230683437.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_off00007413.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7413 4752 bytes
SHA-256: cd7a3a9bf5e9258a8db697976c078bdd87e898194bb6a012d8ff143fa26cd45b
font_01_sfnt_off0000844c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x844C 10972 bytes
SHA-256: f620062639df7d2020636a8bc1ad4dc38a617b68ccd152659c49201170a792b5