Malicious PDF — malware analysis report

Static analysis result for SHA-256 c62eb416c7bae312…

MALICIOUS

PDF

57.5 KB Created: 2020-11-05 18:51:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 7e43348a0fc33babb166933f038aa417 SHA-1: a72e7ff643496ec913b8f1dfaf092ae10632329f SHA-256: c62eb416c7bae3121ed4a5392efc9dbc6b807d512283e2e4aab4b8c566a987d0
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/aws?keyword=minion+rush+mod+apk+2019+latest PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370529/normal_5f8956477ff2b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375887/normal_5f93ec490ec9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380881/normal_5f96792a53158.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375507/normal_5f89f8d8a8114.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457854/normal_5fa0c7f85585a.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/319a49f9-ef2d-40bf-9ef0-a5b7e9848b2a/55700239957.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/leviathan_scott_westerfeld.pdfIn PDF document text
    • https://s3.amazonaws.com/bevekizadoxuj/79171725599.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/rearrange_pages_smallpdf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb296bf8-f17b-455e-8e6a-8cc05acce073/bizamubopuvi.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/redabesorirakulejevafexe.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/kvs_offline_admission_form.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/cac_dallas_conference_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/67401781344.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006224.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6224 2972 bytes
SHA-256: a54b7893a90eb529da7229f7562a5dd47fff2e342442ef4ad71424d977b65b68
font_01_sfnt_off00006ccd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CCD 5748 bytes
SHA-256: b5e6d8e4a2ff122b884f239f129a162288234101a9325ec707ce798d038954d1
font_02_sfnt_off0000802e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x802E 8104 bytes
SHA-256: 05f7845d8980eec8cab5002251fbe9ca39d21b7e98d3d24a0a10f805c3fea90e
font_03_sfnt_off00009ab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AB7 11648 bytes
SHA-256: 024f19ebd282d9394aa84dc4497f310bb136e46e011a5f07aa853c2da85cf032
font_04_sfnt_off0000c10b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC10B 16816 bytes
SHA-256: a532121d56d08fa50a2defb6665dce4bccb36f9ee772ee6fd012253f93b3b2b1

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