Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebe525a12ba10831…

MALICIOUS

PDF

42.2 KB Created: 2020-08-20 20:19:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: cd0ea73ae1ad0dc12bd6cd86e3ccb288 SHA-1: 266aea25ff38f1581ea2ed10c2f5486615b1990f SHA-256: ebe525a12ba10831b92b03a5c06df26eaf6a7629f19dd949aa9780e4022808a7
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.com/pify?keyword=aao+na+haveli+pe+mp4 In PDF document text
    • http://fafusu.joyfullearningpreschool.com/uploads/1/3/1/8/131856158/e83ccbc6.pdfIn PDF document text
    • http://files.roryscanlon.com/uploads/1/3/1/4/131407952/4071174.pdfIn PDF document text
    • http://todis.learningindigitalera.com/uploads/1/3/1/3/131379833/sasobili.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/1/0434/2808/5912/files/present_perfect_just_already_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/8034420331.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2768/4760/files/28085755670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8227/6250/files/15890876234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1342/9655/files/basavovusuzud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8151/2613/files/67851674760.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0803/2922/files/zejoxojidugerepubinuvavuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8006/4936/files/fawijidusekubuketesewubav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4276/4962/files/bookshelves_plans.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/28501159073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7686/1606/files/shrimad_bhagwat_mahapuran_in_gujarati_free_download.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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_off00004a76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A76 4920 bytes
SHA-256: 862354d269b8c7797d26162b4944be5fa9ab086c1ff85d6c2a2b3c7a795f6c8f
font_01_sfnt_off00005b1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B1B 9776 bytes
SHA-256: 3937658b94523c9197e947cc3cf6794d870c2f917854f3cf0a703d42b50080dc
font_02_sfnt_off00007cd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD9 18776 bytes
SHA-256: 9e8409b995ac2b0bb76eb3eb8dd1c90fa55d1c1c8a40bb5daa08ca4080948d13

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