Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ee217a956e08ab5…

MALICIOUS

PDF

52.1 KB Created: 2020-11-06 13:00:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: b7ec72f9a0beb69b6a8734684e94e0ff SHA-1: 4113ce6d33598068ff27804ead31a76c7fd83d7f SHA-256: 9ee217a956e08ab5f57ec1064958c42df39268aeec61fb371dd32706f2b648af
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://trafffi.ru/aws?keyword=watch+sing+2016+online+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4412159/normal_5f96730163854.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365655/normal_5f8722e467370.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366984/normal_5f87647b1ebdc.pdfIn PDF document text
    • https://nupejaxisolerez.weebly.com/uploads/1/3/4/3/134348845/a94959d1735280c.pdfIn PDF document text
    • https://mogazikazalag.weebly.com/uploads/1/3/4/4/134440800/redamu.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/83112592-31fb-43d1-a62b-b308ea1b0891/pukezopis.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/and_gate_project_class_12.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/spring_break_2020_cps_chicago.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/dujedofif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37aafa03-9139-4b17-b762-1e288da4ee19/defefipuluvuvami.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7d185ee-1dd1-4488-aead-1b8a92744bd5/34979178885.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8239806b-09dd-4176-8752-44aede4c0b30/magabol.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_off00008b57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B57 5636 bytes
SHA-256: fb78f125012eba4ef2a2f945a959cd924126c6b9ad3c73089cfd4eb84cfc338a
font_01_sfnt_off00009e95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E95 11108 bytes
SHA-256: 0bd8f55db6c7f85a4e24546471af0fb23c483b850b28d455b33606b2f12e7b2a