Malicious PDF — malware analysis report

Static analysis result for SHA-256 46568fef2bb84128…

MALICIOUS

PDF

39.1 KB Created: 2020-08-28 03:25:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 13787146d77691ba12d36f46f0eb34ac SHA-1: 60b2374d9a5ca13664193ddbcab163e5bdc1852a SHA-256: 46568fef2bb84128fad6d2d70334b21777397a0218ecf074e9d7fb3f2966612e
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=super+vegeta+2+xenoverse+2 In PDF document text
    • http://xabob.antoniacundy.com/uploads/1/3/2/6/132695219/zemimonofeba.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/1/0434/7353/5138/files/nexiretata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3495/9263/files/1546973395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6385/2712/files/28392183374.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5209/0022/files/body_reading_visual_assessment_and_the_anatomy_trains.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0224/6814/files/hand_saw_guide_block.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/2481/3977/files/simple_algebraic_expressions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2356/3925/files/33364001932.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9249/2963/files/suvofapekaxiperegejesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/7466/6905/files/kenmore_elite_he3t_error_codes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5666/8565/files/xivakegeku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8688/9625/files/65567363846.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_off00004d68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D68 5152 bytes
SHA-256: b5f2fdb65438c4a2a94e96ae44c0b1824cae4e3898ec0b6e44151efdbd84927a
font_01_sfnt_off00005f01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F01 10148 bytes
SHA-256: 57031954168e17dbb059aa51a071d3f8b56b762cfa653319f0d51dc0061bca7b
font_02_sfnt_off000081c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81C6 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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