Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c74c8121866b84c…

MALICIOUS

PDF

47.8 KB Created: 2020-11-06 20:01:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 4e0ff4371f474e97d9768d5c3f6591f9 SHA-1: 59ab1d82cac53c893d8cad7f8a19b59fb6565c6f SHA-256: 5c74c8121866b84ccef527126c5da4a556d8ee6d859c04dc2233e7530280d05b
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://trafftec.ru/aws?keyword=bristol+22+sailboat+review PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374951/normal_5fa3716e49211.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366359/normal_5f8e2b087892f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416496/normal_5fa20e9e43e97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376866/normal_5f93ede023784.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393898/normal_5fa1983097f72.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/halloween_activities_for_school.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/balloon_tower_defense_3d.pdfIn PDF document text
    • https://nizowowe.files.wordpress.com/2020/11/midesifitir.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/nifefomajopurufateked.pdfIn PDF document text
    • https://s3.amazonaws.com/mejediparaxi/julowefabidumalekunoxo.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006617.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6617 3016 bytes
SHA-256: d335613102fbbeb3f03d9347031b0eb91bcc36d7d8aba2d01324a4611d8111ad
font_01_sfnt_off000070d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70D0 4832 bytes
SHA-256: 0a86973e1a9c80f33f9c0b8beec16dc088fec237653d097e04bb438cfa666932
font_02_sfnt_off00008159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8159 10264 bytes
SHA-256: 623d30b1f6cc71e6deda92e188207a294eba596c017776c4b4bba1257fbcf0de
font_03_sfnt_off0000a467.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA467 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c