Malicious PDF — malware analysis report

Static analysis result for SHA-256 02ad5e8a4cff75a2…

MALICIOUS

PDF

41.2 KB Created: 2020-10-28 16:23:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: c6bb45adfd44985022108f1909dca7c0 SHA-1: effccec2d2a6235140d08d5a75ba4799f9e40780 SHA-256: 02ad5e8a4cff75a2c3c895f6c7ac218f9c70806166f9e50ae228265d16536198
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that point to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The primary IOC is the redirector URL, which is likely used to host phishing content or distribute further malware.

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/123?keyword=sweet+and+sour+cabbage+soup+rachael+ray In PDF document text
    • https://cdn-cms.f-static.net/uploads/4426088/normal_5f994ee44ec16.pdfIn PDF document text
    • https://valetakomo.weebly.com/uploads/1/3/4/0/134012509/4096277.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366324/normal_5f9245cd6468d.pdfIn PDF document text
    • https://kizekusoviwo.weebly.com/uploads/1/3/1/4/131453028/658aaf1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374518/normal_5f8a46af103d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376086/normal_5f91934e88139.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365638/normal_5f874d4b8ea8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378613/normal_5f970243cc972.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366063/normal_5f8775cc63d2e.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/1/0438/3683/3954/files/dekoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a55bbec5-8c72-475a-b506-7f6cd3ad7ce6/dalafuzovudemilonotaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6731f7dd-583d-4771-b6b6-e000685526b8/didunanaxemavepevunip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2440/7961/files/ti_30xs_calculator_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ad5e557-a071-4c52-863d-5cd83fb28b9a/xakujuxiboxumobowujax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c3f7706-8bb0-4d77-b4a9-8fc909a4e83b/16479257795.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/181c1246-2ce5-4909-b99e-ff0fe2c8efbb/error_tipo_1_y_2_ejercicios_resueltos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c79a4e4-ae6e-4f92-8678-d5104d570dcf/69360538545.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/9341/8681/files/warenol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad231511-f3f1-4328-a211-4be7d6ac2ea5/98642758091.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000054bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54BB 5608 bytes
SHA-256: 857cf40c1a8602052163892231a70d4aa1e84431f73a109b017b4bbc3bbe1a4c
font_01_sfnt_off000067cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67CD 9788 bytes
SHA-256: 549fb74d4aac37ccf8dd8eacff900cb500f24e0136f8b053d08c58feb97a1c09
font_02_sfnt_off0000894b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x894B 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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