Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0de800deffc7712…

MALICIOUS

PDF

71.9 KB Created: 2020-10-31 00:39:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 72f124a94905f87b21142ffa8688c8fc SHA-1: 43ee90d3bac08f01fde4767685ab43765e378d09 SHA-256: c0de800deffc77124a5f82c2d545412ee96177e1c160717a2c56793379571c29
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=avengers+infinity+war+streaming+vf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369165/normal_5f9286d1ba958.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381082/normal_5f8fd7de1021e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370541/normal_5f8d30665d002.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376088/normal_5f8a6d2264eff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366376/normal_5f8716f9bd92e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365525/normal_5f872f4cc4e96.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367017/normal_5f87446b63332.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/1/0500/5505/3472/files/jusitagolopumugixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3903/8360/files/set_variable_to_worksheet_name_vba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/0368/1189/files/radio_shack_plug_n_power_61-2470_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8039/2609/files/protesis_fija_contemporanea_fujimoto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/4324/4200/files/wexozebowon.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

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b020.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB020 4976 bytes
SHA-256: 9e5909596fdebb5b52be65a34eb0bdbfb35615c12abc821a6a04dbff1a7de7d9
font_01_sfnt_off0000c0fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0FC 2240 bytes
SHA-256: a94fc0b04a3ff4da30cea24b3fb8f2fee2c1ab2008078f8bc2ee051ee710afb4
font_02_sfnt_off0000cb14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB14 10504 bytes
SHA-256: cb25f9c073ef3121b385ccfb7e0fccce1f3fa026c15c3ec3275b1603b721dd21
font_03_sfnt_off0000ef47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF47 16116 bytes
SHA-256: f5a9ec201570b84e340d3fbd8b5ce27dd2dfb5a9b7ca6fc98eaf48027da53442
font_04_sfnt_off00010431.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10431 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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