Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a0d2c171390b76f…

MALICIOUS

PDF

52.7 KB Created: 2020-11-06 19:33:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 409a0887b3bda239951506dc61f0341c SHA-1: 95fbcfb39c9edd50c3db5ad9bd08e02e379fd2f0 SHA-256: 3a0d2c171390b76f821983b415c4877c27ab018b9feb1f19a6ace05475ef78c2
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://trafficel.ru/aws?keyword=undefined+reference+to+vtable+for+class+c%252B%252B PDF link annotation
    • https://gotitodurafa.weebly.com/uploads/1/3/4/3/134351762/697956.pdfIn PDF document text
    • https://xikunamoveg.weebly.com/uploads/1/3/4/5/134596382/temisexupapakaxi.pdfIn PDF document text
    • https://kapekutom.weebly.com/uploads/1/3/4/4/134437999/moxesikalutagaxux.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/pewibim/pojekukibusokilo.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/beravutatusobuxexepew.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/78932444691.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/critique_of_everyday_life_the_one-volume_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/zetubakuz/manual_for_hoover_windtunnel_vacuum_cleaner.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b1bfe45-df10-4268-88d9-10fce7f24220/skin_candy_tattoo_inks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27bdb209-39ea-4920-951f-f8e72c17978c/xipibirurojulipe.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/suxugimezanuwekoxorebow.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/canon_eos_5d_mark_iv_user_manual.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_off00007b03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B03 5204 bytes
SHA-256: 53eff00d379e1c6aa8d176170d9da925ef7dc33c0e6f0fb82c69fb9a485911d6
font_01_sfnt_off00008cd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CD1 17928 bytes
SHA-256: a84c148b014f70f224ddff30c3a18f3298b0dfa98964b297a10483e0ac4879df