Malicious PDF — malware analysis report

Static analysis result for SHA-256 8269e06b1edc84c9…

MALICIOUS

PDF

36.4 KB Created: 2020-10-04 11:46:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 94b7c04f9ad27639ef270231d6df4211 SHA-1: 8f1a5b4566e560f77f300631e321e7563e68dfa0 SHA-256: 8269e06b1edc84c9b12c4ed35f55dd36fc1c71cd734abede0b123a39103bb16c
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://gettraff.ru/strik?keyword=tactics+for+toeic+grant+trew+pdf In PDF document text
    • http://files.scacademyofauthors.com/uploads/1/3/1/3/131384663/weraxetiwo.pdfIn PDF document text
    • http://files.tommyleeedwards.com/uploads/1/3/2/6/132680813/sifagesoraleza_bovena_soxoge_bisesipiseve.pdfIn PDF document text
    • http://files.hawaiimobileautodetailing.com/uploads/1/3/1/3/131398428/jifun.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/55e5011d-f161-40e6-a755-456279fe94c1/kadonokoresizijoxig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c78031a-2f14-42d2-8e97-3a023b3e41f0/gozovevo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ce09fd3-fb65-439f-960e-048d18d3801d/tifatedejigiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29dd4d7e-fd47-4259-b185-164af828a95f/21091374631.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f86a805-4b31-4568-b7c7-75e0516a0d4c/37960214913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3645/0717/files/craftsman_54_inch_mower_deck_belt_routing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/2341/1611/files/danielson_lesson_plan_template_google_docs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/6481/5527/files/amor_de_madre_victor_manuelle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/8128/8859/files/sonic_unleashed_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/0019/3182/files/57812204001.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0c618c5-117e-4d81-8f90-5b20fe90a0ca/gujejoriwelatuzo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d73cb9b-3b0c-478e-96a0-1a037326acf9/tabefawowamu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb4ab8bb-1b41-4cf1-bc5b-5f1f33c9ea12/82512534430.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e1a5a2a-b448-4083-a98e-34b66b743dd1/30310133589.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c14deb8-e996-4003-be0a-4fcb5adf254e/kisijejogamavomo.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_off00005024.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5024 5332 bytes
SHA-256: f2ae76d9515ca1051f49e0a3ab4fbd6fa3073bd77dd2de76a5bbbbac8d249778
font_01_sfnt_off00006266.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6266 10216 bytes
SHA-256: 9b4f1f666bb283ddef1a720ff01af4f2adc4e506dc226fcd2d7cca06d2400bfa

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