Malicious PDF — malware analysis report

Static analysis result for SHA-256 bad9742d9afade15…

MALICIOUS

PDF

62.6 KB Created: 2020-11-09 10:58:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 47d2d49eb1728111054851b41d271ad0 SHA-1: 93d423c9574597af1d82bcdd9aca897a546fe956 SHA-256: bad9742d9afade15613a5c4b0759a034343962486f8d9d7de71f37b376a399c6
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://traffking.ru/aws?keyword=distance+of+penalty+kick+soccer In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379849/normal_5f912ae2621c9.pdfIn PDF document text
    • https://numudapusolu.weebly.com/uploads/1/3/4/6/134628478/f27c954a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402519/normal_5fa8e88da6af0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383444/normal_5f9570f406bfd.pdfIn PDF document text
    • https://gudojovevisepu.weebly.com/uploads/1/3/4/3/134314990/8058853.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365635/normal_5f892f2168a0f.pdfIn PDF document text
    • https://nipaxibovaj.weebly.com/uploads/1/3/1/3/131379211/rululesowaz_siwafu.pdfIn PDF document text
    • https://sobokiza.weebly.com/uploads/1/3/4/3/134363786/xijawalesojewok.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/2348934354.pdfIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/kedodedelewur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26bbb725-0eeb-45d4-9b47-1b06de4e093d/34546467852.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6318bd99-1c88-4332-9eaa-f515d228daaf/how_computers_changed_the_world.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8855fb1-3a7a-4e67-adba-00a3ab2581a0/sekifilofokudamu.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_off0000b71a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB71A 5172 bytes
SHA-256: a7823fcafd643493faf185ed7c57ad9ba0b0accce929d638959cf51f4e8b4f31
font_01_sfnt_off0000c8db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8DB 10924 bytes
SHA-256: ba736d0c50a456dafea1b66e8cfc6cc6135795f065db5bd3d499c87aeef8cf93