Malicious PDF — malware analysis report

Static analysis result for SHA-256 15f3ac2ea2767337…

MALICIOUS

PDF

41.7 KB Created: 2020-10-05 13:27:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 63d81462d6d0032151b372237c08bbbe SHA-1: f23de3e444ca4add72f9de92854c7b8da97a24c8 SHA-256: 15f3ac2ea27673372de3828e69f4824e6d8366bc0ca7a9ddfbe9767945f84733
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://ggtraff.ru/pify?keyword=sevierville+primary+school+calendar In PDF document text
    • http://files.jatcconsign.com/uploads/1/3/1/4/131438510/7598661.pdfIn PDF document text
    • http://files.cimarroninn.com/uploads/1/3/1/4/131406337/pekole_pimapipomapete_wadaz.pdfIn PDF document text
    • http://sutodaku.familydogsocal.com/uploads/1/3/1/4/131452816/tekaguvirerim.pdfIn PDF document text
    • http://files.mackidz.net/uploads/1/3/0/7/130738859/vuwir_gibibe_soloxer_xewutuwire.pdfIn PDF document text
    • http://sodunij.domhawthornmusic.com/uploads/1/3/2/7/132710712/4c39af22c7622.pdfIn PDF document text
    • http://files.dcchurchofchrist.org/uploads/1/3/1/4/131437436/3f375bdb4717c3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8391/8229/files/61391030795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8695/4139/files/zenoxisapomiwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9257/3336/files/fufavubaxasesokom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3537/0407/files/kofimujerabakuwelu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7599/3764/files/wechsler_nonverbal_scale_of_ability_score_ranges.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2012/3285/files/87779259663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7767/1843/files/molipajenufinuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8896/0416/files/sift_heads_3_chapter_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8579/1383/files/best_calculator_for_calculus_online.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006225.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6225 5576 bytes
SHA-256: 73a0b52b3f3e3a58f6b1859aa4207a04e5d07186f45f70e5cd4ef17f6fd3d815
font_01_sfnt_off000074f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74F8 10792 bytes
SHA-256: fe3fe4d48c2dd9ab7bbeb1edb652de98cda814ea56bc026e822c2a58899e5772

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