Malicious PDF — malware analysis report

Static analysis result for SHA-256 caa99c84165fae5b…

MALICIOUS

PDF

46.5 KB Created: 2020-10-31 12:09:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 66d1b932721358e48a3bcd393fd9594b SHA-1: ab01ae86ccfdb53d716807eab5a379d826c93971 SHA-256: caa99c84165fae5b97a5a2ef9277ca8fde92b762f5db5e498d1e4d2f5903a6ab
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.me/123?keyword=rapture+by+lauren+kate+pdf+free+download+english In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379968/normal_5f8b507e0b8e9.pdfIn PDF document text
    • https://nulixedupalaz.weebly.com/uploads/1/3/0/7/130739510/fibelezazaraxa_nifokobuli.pdfIn PDF document text
    • https://pipalilivo.weebly.com/uploads/1/3/4/3/134310902/4309967.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367007/normal_5f8833054ed84.pdfIn PDF document text
    • https://lodovanu.weebly.com/uploads/1/3/4/4/134403978/pujogulipokomufe.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/1/0487/8886/5189/files/midas_mahjong_online_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/kixasimag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/7384/5433/files/the_hustle_123movies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/8734/5837/files/beneficios_del_jabon_de_azufre_para_el_cabello.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/arcane_mage_talents_shadowlands.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/91063491090.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_off00006a37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A37 5708 bytes
SHA-256: 33f4ef084c7304532a81b44f76b1d0fe1a6174d05e4bd1a98cd1cf9baf927148
font_01_sfnt_off00007dbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DBD 2084 bytes
SHA-256: 95529ff465a0f0894bd9276ab492101e8113c84c92f56be4d046e756794d9b42
font_02_sfnt_off000086ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86CA 11412 bytes
SHA-256: 913d44eb68e6d64f673b0af4b08019026c2d81e6135f36771438c84561915310

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