Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0ce506f542ff6f5…

MALICIOUS

PDF

42.1 KB Created: 2020-10-03 08:41:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5c0f81a31c6118f5e2aedbbcba54c7c6 SHA-1: 4738917095eda42026f4ae9032f51f0b434aebb2 SHA-256: d0ce506f542ff6f5779433e25b9292f996d1949dc2ee8a925b75329301910da4
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=saxon+math+course+2+answer+key In PDF document text
    • https://site-1036679.mozfiles.com/files/1036679/fadub.pdfIn PDF document text
    • https://site-1037019.mozfiles.com/files/1037019/vojizewaxer.pdfIn PDF document text
    • https://site-1036743.mozfiles.com/files/1036743/24036029069.pdfIn PDF document text
    • https://site-1037079.mozfiles.com/files/1037079/mofagem.pdfIn PDF document text
    • http://jofalej.fredtoke.org/uploads/1/3/0/7/130775162/lokigibanadusibo.pdfIn PDF document text
    • http://files.batheinbeaufort.com/uploads/1/3/1/4/131436978/f37727.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/1/0497/4372/4698/files/cs_159_caltech.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3686/8762/files/the_beast_side.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8754/3964/files/physical_properties_of_food.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4721/3464/files/1_samuel_9-10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0445/2246/files/adobe_illustrator_cs5_15.0.2_update.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/7603/4198/files/serie_de_flash_netflix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9819/7160/files/wedimewiredolokotawixupu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65C3 5568 bytes
SHA-256: df1853ea482141b133f416e7375805ec1b3f2463f86c184b79048c6268635d6a
font_01_sfnt_off000078a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78A4 10332 bytes
SHA-256: 5e7e9ec898dad5bf3e9e347310e249738fa680065f350202d8b0368059ce25e5