Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae9b089c3b6be08d…

MALICIOUS

PDF

46.5 KB Created: 2020-10-25 19:20:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: a9172c0e15b649ee372109241cdce621 SHA-1: 675682ddcbfa8f60401eaa6f56d7b5f20d4b55e7 SHA-256: ae9b089c3b6be08d7a33d1d4eba9a6171c854675588247c5b7b1d92b48e8321a
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://cctraff.ru/pify?keyword=download+pdf+program+for+windows+7 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367648/normal_5f8acb44aed46.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407571/normal_5f93740c1cb65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365635/normal_5f90825b7d190.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/wogiselaruto-nokage.pdfIn PDF document text
    • https://xusawoji.weebly.com/uploads/1/3/0/7/130739635/d2f9836b6dfe1.pdfIn PDF document text
    • https://wunimebi.weebly.com/uploads/1/3/4/3/134361225/wimakusedefefi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370278/normal_5f8ce0e5dffd4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382189/normal_5f8e498733aa7.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006a93.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006a93.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off00009ea8.bin)
    • https://cdn.shopify.com/s/files/1/0485/0057/2315/files/palomita_de_la_paz_para_dibujar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/4703/0436/files/lewuwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/6793/6420/files/cjc-1295_and_ipamorelin_subcutaneous_injections.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2536/6165/files/13348842625.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/4784/8602/files/risugodarow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2812/7650/files/60789767867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8692/1376/files/genifonefomotibu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8068/8836/files/pisedilitub.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 extracted file (font_00_sfnt_off00006a93.bin)

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A93 5120 bytes
SHA-256: 17b1e7df98cfb5a10cbdf527efd12035f3a7338afcf2ab8d678c0ce67fddcfcf
font_01_sfnt_off00007bf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BF1 10156 bytes
SHA-256: eaa6aa1576a8e3779f8cbe2fd58cdb51b75f56d45435c7e166bc5034fd52c54c
font_02_sfnt_off00009ea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EA8 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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