Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb0e34846358d4ba…

MALICIOUS

PDF

46.6 KB Created: 2020-10-27 15:24:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 9dc4a0bb64a7275050934dd5e415d16f SHA-1: ab9fe3062a471166f7e7f20050d1c76ae75d9e2d SHA-256: fb0e34846358d4bafb8240e2234e97e4a645ca4141328d04793cd81c32f16e29
202 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ttraff.me/123?keyword=unblocked+movie+sites In PDF document text
    • https://kikuvabafot.weebly.com/uploads/1/3/4/3/134332304/a7c10.pdfIn PDF document text
    • https://tenabawik.weebly.com/uploads/1/3/2/7/132710661/cb8a0c81c.pdfIn PDF document text
    • https://vimiwegom.weebly.com/uploads/1/3/0/7/130775837/sotebasabobaniso.pdfIn PDF document text
    • https://nitiruminaxodax.weebly.com/uploads/1/3/0/7/130738633/bejezogakenigufo.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://cdn.shopify.com/s/files/1/0480/4159/0948/files/15735515749.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/402d50d1-9dd8-428f-9e8c-8c4051c18fd1/goxirewojafitajege.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/201ca6c2-dd1c-4c6c-bd6a-fd08c2a2e4d0/vegovaset.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/39668703468.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/nidawedisoditunosomu.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/job_application_format.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/63609195310.pdfIn PDF document text
    • https://s3.amazonaws.com/rotowan/glandulas_sebaceas.pdfIn PDF document text
    • https://s3.amazonaws.com/baxunaf/pakuwodefokomozezameki.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/verbal_logical_reasoning_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/18698856148.pdfIn PDF document text
    • https://s3.amazonaws.com/zafaronivaj/37622312093.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/jokarakibegaragazij.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/19016731890.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/bizepasedudifulo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A39 4824 bytes
SHA-256: 26ea0a00cb1e8d6e58a6fc48110881db655285d6adc908ceed85d6e5c111e02c
font_01_sfnt_off00007a8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A8F 11016 bytes
SHA-256: a6ff1bb551de52fda8c5a335c47164b64675329c5aa94264857fe1016284153f
font_02_sfnt_off00009f8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F8B 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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