Malicious PDF — malware analysis report

Static analysis result for SHA-256 063cc0508d16baac…

MALICIOUS

PDF

42.4 KB Created: 2020-10-17 00:41:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d36bd3626001709d5f045413f57f2634 SHA-1: c02a4580f52d70f6261b777b83a2214cd9cb4245 SHA-256: 063cc0508d16baac38879bc3d577a048eb3aa8ebd7e4135ad69ad4bedaa4f426
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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.
  • 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.
  • 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://ggtraff.ru/strik?keyword=le+g%25C3%25A9nie+du+pousse+pousse+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369317/normal_5f8a09db09b5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365602/normal_5f87ab6c1201a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365636/normal_5f870c99527af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370778/normal_5f888e91cbbbd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366652/normal_5f8988adf3454.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373997/normal_5f8a132c134d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378410/normal_5f8a11a96aa80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375197/normal_5f8a11638835a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366647/normal_5f8752c43e0f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369507/normal_5f887f503ec9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370077/normal_5f894ed9843fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365638/normal_5f8a118724655.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368228/normal_5f890b752de80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370762/normal_5f886aa6d10e1.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/0b20b100-dbdf-4a38-bc06-a72b130d2c57/wixiribisusitanurisa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b49277a1-3334-42e5-aa68-4abcde52c2a4/nodetawuzozimopiviwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02978767-a271-436a-a528-7763771899c5/luvituzevu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56a1724d-f3d9-449a-9ecb-50d3665001d6/80530605884.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9155/6504/files/maduburamudutazegibujaki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4233/5651/files/colchester_middle_school_track_sign_up.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9908/9824/files/22226635318.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1783/6965/files/maxevilegamisusonanabevi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7355/8935/files/samsung_wisenet_cameras_manual.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_off00006466.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6466 4956 bytes
SHA-256: 7ec5eb3965012ef34e3058900298f898a481d5072c61e66d625523292454e5ac
font_01_sfnt_off0000751c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x751C 12064 bytes
SHA-256: 3c01ae336687b104693284c019d2cdff4fd5715ab94be3a3586a2c51f2d539c3

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