Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc1c1a2310360def…

MALICIOUS

PDF

41.2 KB Created: 2020-11-02 22:23:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 75b26bf0856dd980c2fe6e20f8a6854e SHA-1: 4fcd142f886074a1edb19b794fc428dfe80663ff SHA-256: cc1c1a2310360def75cc574d637e58ce5baa2cf31943c59beb310d82ced4c752
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://gettraff.ru/123?keyword=todd+werner+net+worth In PDF document text
    • https://cdn-cms.f-static.net/uploads/4412895/normal_5f98bac4e0f9d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417208/normal_5f96f379ef2c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389085/normal_5f8f30ee2229c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368219/normal_5f9249dd341a1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e03edba-3c65-4e77-a736-718bd5007b9b/jamame.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/370736ba-5c1c-4375-9158-67110489d53d/69719516219.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/jenivuziposilozefasad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86c7d506-3308-4999-b8e1-716a0310383b/wutomunijafazov.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/kofosagap.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/problem_solving_theory.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50f59cc7-f435-480e-bb50-5abcd842671e/terazixunenigitogi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2863c0ba-9503-4e59-89f2-a5c9f01f7312/reruzilalu.pdfIn PDF document text
    • https://s3.amazonaws.com/tesapibebujep/sirinowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/4833/7059/files/boruvivetamuzo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/697a8412-f5ce-4c4a-8d1c-8d6e4604c941/2485470486.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/87465516448.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7766b1f6-a332-4deb-aade-bc024ace51fd/mathematical_models_by_richard_haber.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/0688/1702/files/hunter_leveling_guide_wotlk.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_off000064c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64C2 4536 bytes
SHA-256: 777126e35f581bfd6c895f9db67f04b8a2a07fa9fe9f7905fcd5160f3080dffd
font_01_sfnt_off00007434.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7434 10472 bytes
SHA-256: 5afc9933b3924443b8801106cfae6439cc7f67ce09b285d4ffbb0f54df99d0fa

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