Malicious PDF — malware analysis report

Static analysis result for SHA-256 270d3f5f815da287…

MALICIOUS

PDF

47.4 KB Created: 2020-10-29 06:12:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 94dcc844524900fde8f3a0d18c22b56b SHA-1: c9fbd9689898d6f250f981a59bff5e6812415de5 SHA-256: 270d3f5f815da287edc75ce8a8f5df2bb7012080f0c3c38e1074f94d35e290f3
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.link/pify?keyword=garden+party+attire+for+male+guests In PDF document text
    • https://gozofuma.weebly.com/uploads/1/3/0/8/130874065/719390.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369783/normal_5f8f8d965a8c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408990/normal_5f927117658e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412897/normal_5f94925b9ca82.pdfIn PDF document text
    • https://donikigegetala.weebly.com/uploads/1/3/4/3/134311768/zovitopupanava.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/2697538.pdfIn PDF document text
    • https://zukamukenipebo.weebly.com/uploads/1/3/1/3/131380388/4293853.pdfIn PDF document text
    • https://sukowaletudevux.weebly.com/uploads/1/3/0/8/130874669/2632991.pdfIn PDF document text
    • https://derodaju.weebly.com/uploads/1/3/1/6/131606282/rawabevujoroj.pdfIn PDF document text
    • https://narogigadi.weebly.com/uploads/1/3/0/8/130874066/c2099e721b.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/c3fdcb9a-b913-4d31-b78c-49aa586265c3/xojelabuxebevivukewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2451/7790/files/dizabexutudalidenaso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc769693-881b-48b4-a740-5363750812db/zukolipixamebijexuxuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4456/8220/files/95172236204.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6871/0294/files/droit_commercial_maroc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/9333/4456/files/navy_mr_practice_set_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/6937/9238/files/what_does_desolate_mean_in_english.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_off000077ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77EA 5496 bytes
SHA-256: e96c7148afc4988abdab572fe44b24208dca1afb4c30b58fc13040ed559f2d44
font_01_sfnt_off00008a97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A97 10920 bytes
SHA-256: 705fb201969f7597517216cd248ed730516724273e014be13e1a0a7fb32e162b

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