Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1a5566808ca77fd…

MALICIOUS

PDF

36.0 KB Created: 2020-11-08 11:26:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: d81a8ce5a24624bddffbd5283b59aac6 SHA-1: 8d5e577a70a6a27c7788880f9db762d3c210f8fd SHA-256: e1a5566808ca77fdd13d3d83711f9d182c96b54acc06dab55cae3313dfbaccdd
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/123?keyword=bush+shootout+unblocked+games PDF link annotation
    • https://doleroxewaforud.weebly.com/uploads/1/3/4/3/134322791/879536.pdfIn PDF document text
    • https://viwuwobigoku.weebly.com/uploads/1/3/1/3/131378942/tefidasixenabi.pdfIn PDF document text
    • https://walijogopabo.weebly.com/uploads/1/3/0/7/130776167/punitetiva.pdfIn PDF document text
    • https://fobedixosofano.weebly.com/uploads/1/3/4/3/134377241/d719f63a3da.pdfIn PDF document text
    • https://sagezawi.weebly.com/uploads/1/3/4/3/134322896/3e5f16c1e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://bivananoso.files.wordpress.com/2020/11/89335943961.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/the_story_of_philosophy_will_durant_audiobook.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/disiterevetulibowiverok.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/matthew_bible_1537_download.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/15689820451.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_off00004d2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D2A 5512 bytes
SHA-256: a8f1fab16d3c789f93cdbed84a855952450dea082a27cc6386bd621f3cad2ed2
font_01_sfnt_off00005fc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC8 10116 bytes
SHA-256: 6a0b94d82310eada54bb5858c3887ca99cdfab63bdd5140819a81506b056fd1f

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