Malicious PDF — malware analysis report

Static analysis result for SHA-256 810ed0d9911ca892…

MALICIOUS

PDF

38.6 KB Created: 2020-10-26 19:07:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 10363344db0bfbeab9516113a8374878 SHA-1: 9c61d440b9a26df4516c2372f58731cf99637a71 SHA-256: 810ed0d9911ca8926cc278925b1c2ca005436b3f304b97f405e4009b0d75ffee
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.link/pify?keyword=pie+paragraph+worksheet In PDF document text
    • https://tedovuja.weebly.com/uploads/1/3/4/4/134465286/d2acb5003.pdfIn PDF document text
    • https://gazesomudari.weebly.com/uploads/1/3/1/0/131070071/dixafipiduw.pdfIn PDF document text
    • https://xamurifepugep.weebly.com/uploads/1/3/4/4/134484548/polunuwizubelisa.pdfIn PDF document text
    • https://pejopazuzaguwoz.weebly.com/uploads/1/3/2/8/132815183/6576417.pdfIn PDF document text
    • https://ligotilup.weebly.com/uploads/1/3/4/3/134313371/tufipuzizebigi-runik-jewelixenosakek.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374368/normal_5f8fdef67f9fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366337/normal_5f8e949727867.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367940/normal_5f8f331bc8d21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371814/normal_5f886ed794b54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369509/normal_5f87dbff21a5d.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005976.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005976.bin)
    • https://s3.amazonaws.com/fajixe/33870250185.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/tipard_to_word_converter_full_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/pokanelebijemudelo.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/27621635708.pdfIn PDF document text
    • https://s3.amazonaws.com/nitirew/air_core_reactor.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/logical_framework_matrix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a37e1928-dadc-42f6-81d4-b0d4c6e98034/47442915474.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cba7fe08-9929-492a-bdc5-5654ccd1ff88/pukevavezorofekunixela.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f500451d-9aaa-4d32-9908-54ad70f5d2e7/sakebemovejimesonu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45f4add8-8848-4d3d-9cb9-8eba8cec535a/fixeviremusu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0cb3e4f-2d1f-42bb-970c-75d11e4dd05a/fiwaxifebuzuzo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9eb7f200-2a4f-4457-ae42-f00845be068c/comment_enregistrer_un_film_sur_freebox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a19b5339-249c-4cf1-9927-41449990c8f4/posesegu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3d4ec69-1db5-4ce1-b628-323fa7575509/59168542314.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/206de097-f0b1-4a22-a67b-79266ef04f76/56940192140.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_off00005976.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005976.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5976 5208 bytes
SHA-256: 5ae14e3b91d1b5fcf68957f3c823df6151d4e476ad13697c0509edbcc8dea696
font_01_sfnt_off00006b37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B37 9896 bytes
SHA-256: bf7773447ba754a9595c7d1e2e91dcd90977b262007eed6ec78fbbc82806e32f