Malicious PDF — malware analysis report

Static analysis result for SHA-256 8eebc160635b1e1a…

MALICIOUS

PDF

49.6 KB Created: 2020-11-03 12:13:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 36056f9c05282dec438b27f61b2ce857 SHA-1: 5b5f4bc130859d910fa563a84c069d6e6e5c64d4 SHA-256: 8eebc160635b1e1a54c2f87fc1c6f37cd6abba77dbf6ef8bdea01c10032bcc34
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=words+with+e In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370073/normal_5f9da71e459d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369656/normal_5f8b91d7a46ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367631/normal_5f886c8d3bdf5.pdfIn PDF document text
    • https://dinoromakutaxe.weebly.com/uploads/1/3/4/4/134479472/b486b9e0.pdfIn PDF document text
    • https://nosekuge.weebly.com/uploads/1/3/2/7/132740467/24aaa068bc081.pdfIn PDF document text
    • https://wetejitaxazis.weebly.com/uploads/1/3/4/3/134306742/vileza_tinelurasine.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366401/normal_5f954efde3dae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383451/normal_5f8fb2c45765e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449402/normal_5f9fde22a6bec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366668/normal_5f9e41af2e766.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/1/0506/3861/8781/files/tamil_month_aadi_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d8818d4-fd47-4eb0-ad68-94dd6b99451a/acura_integra_jdm_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a25cc4fe-93c6-44a2-a3c1-5414e56d18b2/mipakuledovimemizot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0482/1144/files/mens_blazer_fitting_guide.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_off00007622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7622 4460 bytes
SHA-256: 91efc5d2a48662dc08f0fff1c6a2a312fc1caaad4a80d55fd6974a80f6894c97
font_01_sfnt_off00008572.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8572 11168 bytes
SHA-256: b935e76d8f7ff4a2742567562a3c69339c82430b062d265792abaeebf4dbed0a
font_02_sfnt_off0000ab70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB70 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361