Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8f7ecd30e321cf4…

MALICIOUS

PDF

47.6 KB Created: 2020-10-27 12:24:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 1142413e1e07fce7ad84a620585ff774 SHA-1: 156212936fc1c95bf5547e2063eddecef36cfec3 SHA-256: e8f7ecd30e321cf411985a3ac1ebaad803ff56d0c22a327040e6e2b8b3f06ae6
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=letter+of+intent+veterinary+internship In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368496/normal_5f951985a5198.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366405/normal_5f87400dbd514.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366324/normal_5f8727fb79912.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365646/normal_5f8712d7b1c32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381997/normal_5f963d9cd3cbf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379231/normal_5f8e9770e8f8c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366645/normal_5f88bb126f622.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006dd0.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006dd0.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0000a0bc.bin)
    • https://cdn.shopify.com/s/files/1/0500/0157/6086/files/gixudavetomomuvulires.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/0719/5311/files/download_ducktales_remastered_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4415/4791/files/32612247391.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6099/9845/files/50030200357.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/95199286712.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/xopijig.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/love_from_the_very_hungry_caterpillar.pdfIn PDF document text
    • https://s3.amazonaws.com/lanubili/contoh_membuat_cv_lamaran_kerja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f441cd58-a2aa-410d-95e7-e51e1919962a/xurujizoze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/517a1eae-acff-4902-b832-bfb20c8a22b2/fejove.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75f3fd02-d5ee-471e-adb2-ac2d12bd4876/tutisubivofizem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1005098a-bb24-41e3-9e0a-2a4a5256d084/bisexeti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1a5f03e-6eb8-4772-975f-099de8b29336/58506472467.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_off00006dd0.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD0 4848 bytes
SHA-256: 4be12248513fa422ba401dda6cc6d03ed1aef4f30af5fe9fccda0093d59dc7c3
font_01_sfnt_off00007e49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E49 10052 bytes
SHA-256: 134bb7ba1d15e098802b232861ea7dfe725178ea2fb485056c42959129ac466e
font_02_sfnt_off0000a0bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0BC 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e