Malicious PDF — malware analysis report

Static analysis result for SHA-256 e079abca0d3d7b3e…

MALICIOUS

PDF

49.2 KB Created: 2020-09-30 21:44:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: d39e306eb981269113cf450d8452c9bd SHA-1: fec184ab095a8e50bcc745f6408d5c26a5409b2e SHA-256: e079abca0d3d7b3efaea58bda4e79411bbdc15297a3f7bbdf991c24870a3a5b0
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://cctraff.ru/strik?keyword=teoria+causalista+del+derecho+penal+pdf In PDF document text
    • http://xowuwu.jingyouecon.com/uploads/1/3/0/7/130740206/tujokuratedexu.pdfIn PDF document text
    • http://bukifodil.audacitycoffeeroasters.com/uploads/1/3/1/4/131410012/powudoxozufemel-xegibo-zasorovutekit.pdfIn PDF document text
    • http://xoloko.pelicancovesc.com/uploads/1/3/0/8/130814328/mojiri.pdfIn PDF document text
    • https://site-1037022.mozfiles.com/files/1037022/vuwovavixepuram.pdfIn PDF document text
    • https://site-1036958.mozfiles.com/files/1036958/14528123925.pdfIn PDF document text
    • https://site-1038738.mozfiles.com/files/1038738/lawosofu.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/1/0435/6443/3569/files/70218819874.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/3114/6908/files/wagapusitademugedatunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9826/6016/files/yoga_asana_pictures_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6974/1983/files/visufimowododafubimi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4173/4311/files/gukevuxadajadilexidur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5271/8494/files/minecraft_banner_letters_1.16.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_off00007557.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7557 5076 bytes
SHA-256: f132a596cdfbca533afd928d552a28a7b29223e85e2cba55ca5db31ad7e85b73
font_01_sfnt_off00008687.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8687 10404 bytes
SHA-256: 27bd1e0a581b586b5e7892c633936e733e5c3f8b177cc4fe44fc8b55d25a21de
font_02_sfnt_off0000a83c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA83C 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f