Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6020c9887ef141f…

MALICIOUS

PDF

44.8 KB Created: 2020-11-05 20:51:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: fb1b6b3e3f8544e171f9048dec759da8 SHA-1: 9bf57aee6433eed134a3cc75d80fb8e6cb945c03 SHA-256: f6020c9887ef141f63aa641b58cb790cc2a48bff3d72b0d7f74a3c32777de0b4
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://trafffe.ru/aws?keyword=james+biden+iraq+contracts PDF link annotation
    • https://xezinazilasiza.weebly.com/uploads/1/3/4/3/134319357/39e0315c526.pdfIn PDF document text
    • https://pirovosarelivo.weebly.com/uploads/1/3/1/4/131406751/xugeboxibadu.pdfIn PDF document text
    • https://gasogufimuti.weebly.com/uploads/1/3/4/4/134461051/3908182.pdfIn PDF document text
    • https://kajukuka.weebly.com/uploads/1/3/4/3/134307777/4318322.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425230/normal_5fa3634c130e7.pdfIn PDF document text
    • https://pixipesigogod.weebly.com/uploads/1/3/4/3/134370637/tobumitura.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nuxepiduded/lipane.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86764cbc-574d-4aed-8484-ebcac0f7cada/35224245.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90f4bac6-abb7-475f-8e29-2a0124cae03a/mibidisojofowex.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/regevizin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c8cf58e-6dc4-42fe-a9ab-e5687ded3225/mibitox.pdfIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/medical_term_for_cutting_into.pdfIn PDF document text
    • https://s3.amazonaws.com/baxunaf/vabusomekiresazorevigerin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a90dd951-5ea2-4d2d-b851-d93d7a9bbef6/bapak.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/juxerokejov.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_off0000715e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x715E 5308 bytes
SHA-256: ab1f099736896b4ed0db70b542027aececc899e00da028f9d00581287b82c300
font_01_sfnt_off0000834d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x834D 10160 bytes
SHA-256: 216ad45392b12e63b40a2cb259148b345cfdd4de0c833ce2fed51f8b287aa535