Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bcd66afb6adcd62…

MALICIOUS

PDF

53.5 KB Created: 2020-10-16 13:25:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f1d39484e7a488694bd29bb03e392f89 SHA-1: 8d1ea2c619eb5e1be97fdeb9d74859e7874e9bed SHA-256: 9bcd66afb6adcd62c058fd24d563c9e2506f526bd7cdcadae61f51e169c4bb97
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.club/pify?keyword=ember+spirit+guide+2020 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365636/normal_5f8756a11f6e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366354/normal_5f8713364a927.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369631/normal_5f88aea391d6a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369179/normal_5f88025ef19c7.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/1515306.pdfIn PDF document text
    • https://jizonuwuko.weebly.com/uploads/1/3/0/8/130814311/lomurujepidatam.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/82b21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366036/normal_5f870adb02897.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369776/normal_5f88fec0410fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365659/normal_5f870132d11c6.pdfIn PDF document text
    • https://kinojapi.weebly.com/uploads/1/3/2/3/132302846/numawotina.pdfIn PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/f37bc620.pdfIn PDF document text
    • https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/2491965.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4902/0311/files/weber_go-anywhere_charcoal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3874/2440/files/max_stress_theory_factor_of_safety.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9508/1625/files/43908784508.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d27de3c1-3e8e-4cb3-a1aa-a880d7d14c4f/32170614322.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdc191ab-f733-40dc-a5f5-50e5aca50a5c/mimoduvuxege.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f77b9b47-54f9-4ed5-9e49-a559858932d4/managitovasapizogemavufez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e3c84f5-fe71-433a-9ab4-3122fb04a108/sagujaxosogerozare.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/293d2ea9-c788-44e1-a3d8-4e045bc4bfe5/mufogasibome.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_off00009412.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9412 5408 bytes
SHA-256: 1eb91ba3b6c8dac67712f76faf50b5349677853d8dbabd60b1836dea28d2b2eb
font_01_sfnt_off0000a65c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA65C 10060 bytes
SHA-256: 3d0bb1229d0355a6593bb09bb86949877aa9bc7b51c08882b4c9a829b2d77bd8