Malicious PDF — malware analysis report

Static analysis result for SHA-256 edc03209d11a7902…

MALICIOUS

PDF

51.9 KB Created: 2020-10-17 19:00:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2304cecf0d71fb6bdae41f43e3efd65f SHA-1: ec5fe57ea20c9d72f0aeb5f1ac6a417e47e397fd SHA-256: edc03209d11a79027ba4ba7286683476d06d8127ce5474d28a8badebd901002d
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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=tv+guide+los+angeles+tonight In PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/laresisif_kigadebokenub_bajutinerid.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/d1ee3c84.pdfIn PDF document text
    • https://zoxetojasag.weebly.com/uploads/1/3/1/4/131437223/85c1f173c37907.pdfIn PDF document text
    • https://sepenunaxob.weebly.com/uploads/1/3/0/7/130776074/b971553a62f9282.pdfIn PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/0e5c8.pdfIn PDF document text
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/a1bf913001604.pdfIn PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/ead64c6e.pdfIn PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/ziposekesugemetif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377109/normal_5f89ee43c05c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377909/normal_5f8a2815c7d3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372101/normal_5f88a0d647c1d.pdfIn PDF document text
    • https://daletutanedura.weebly.com/uploads/1/3/1/6/131636587/f845f68c59fd860.pdfIn PDF document text
    • https://duxixujojive.weebly.com/uploads/1/3/0/7/130739103/6c26f1410aadb18.pdfIn PDF document text
    • https://zugufavowi.weebly.com/uploads/1/3/0/8/130874222/zekijufe.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/1/0488/0623/2229/files/16187996937.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7121/2193/files/20062887113.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/6700/2020/files/practicing_radical_acceptance_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5679/8627/files/ribabasalowegixodi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/6651/3312/files/hyd_mech_dm8_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/9424/4008/files/karma_police_lyrics_tabs.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_off00008015.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8015 4884 bytes
SHA-256: 8929da3f8ae891106b41b75676453510c43faef497628774ff45946bfff3cf27
font_01_sfnt_off000090ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90AB 10272 bytes
SHA-256: c3526a91aa2a52e625f417ae5f2e09f0ed3bb392d7f401ee2ed6d0aba4cc3f7f
font_02_sfnt_off0000b3d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3D2 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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