Malicious PDF — malware analysis report

Static analysis result for SHA-256 c19d60e9ec26e6ea…

MALICIOUS

PDF

66.7 KB Created: 2020-10-20 15:33:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 258b1c276826888888cd386e8aebad79 SHA-1: a8da11c23920c041688c9b56260f9a2dd668d3a1 SHA-256: c19d60e9ec26e6ea72deca34f218ff9d19ea9ce75d8879aa9cfe657aca7a0927
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=forno+el%25C3%25A9trico+fischer+gourmet+grill+44l+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368970/normal_5f8c598250121.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370985/normal_5f88405125736.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369771/normal_5f88c0f25cff4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366031/normal_5f870988e204b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369503/normal_5f8e485e626db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372373/normal_5f8bedced9b12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368248/normal_5f878af436582.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371800/normal_5f88c0f33e81d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377115/normal_5f8b93b42d433.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000c479.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000c479.bin)
    • https://cdn.shopify.com/s/files/1/0433/7300/2906/files/coldest_winter_ever_summary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2117/1879/files/vunikoxerupajuzas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/4535/6198/files/50652084215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5730/6007/files/the_heat_full_movie_online_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2303d797-4212-4553-ab6a-7136dcb00d7a/95751477548.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf6fe5f7-ef17-475c-ae94-82a210c16a57/gevupujizawazeserozi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f4d3835-da3e-4624-9a1e-9b65d01700d7/58142569170.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d088b5a-7359-4c31-8253-400aa3857bfc/68801135002.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fde484a4-a0cf-4a17-b663-b7b334a9c19a/8875991344.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/7038/3014/files/food_vocabulary_english_spanish.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/7297/8585/files/fujarifegiri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5025/3984/files/cold_war_superpowers_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/9679/2996/files/22528230143.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0943/9906/files/ky_court_net_2.0.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4628/1122/files/wabolose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/7888/4759/files/50728928776.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7808/1959/files/wivodavidipitituxawutaf.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 extracted file (font_00_sfnt_off0000c479.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c479.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC479 5480 bytes
SHA-256: b1b2d233883b9f81262a194bf8398906405778173f2c090f4c5c55172d7cecc3
font_01_sfnt_off0000d6b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B4 10500 bytes
SHA-256: 6948521d0aa7321552d8872737ad7e5bac6e936326cd5f0f77fed939956f501c