Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d4d22e5101ab04b…

MALICIOUS

PDF

39.6 KB Created: 2020-11-05 00:18:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 36cf935eddf1bc057f71eab2322a369f SHA-1: e9621049012ed476a0260a50eac45aa3a61e22e4 SHA-256: 1d4d22e5101ab04b91ae71f0803291d93e19a8688e64a9e4e1dee4ace4d3772e
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://ggtraff.ru/aws?keyword=at+t+telephone+manuals+online In PDF document text
    • https://mogidudurunupiz.weebly.com/uploads/1/3/2/6/132695636/katulepunusuvenag.pdfIn PDF document text
    • https://junoxavod.weebly.com/uploads/1/3/1/3/131384771/1767998.pdfIn PDF document text
    • https://jiwanozote.weebly.com/uploads/1/3/4/3/134354006/jubogogej.pdfIn PDF document text
    • https://vopevejefed.weebly.com/uploads/1/3/1/6/131606133/bitenusimuwimenoro.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/8742796.pdfIn PDF document text
    • https://duxataravur.weebly.com/uploads/1/3/4/0/134017775/letatow_livogo_noxuzalepuvu_risovajin.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/duzexefemosaxe/bankers_adda_syllogism_tricks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bdf1660c-a0c8-492e-b8c4-90f1e8270d85/resumen_del_libro_la_revolucioncita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/0647/4420/files/free_printable_maths_worksheets_for_grade_5.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62ee4890-fe57-4633-a935-9984d687c8d0/fiwafozemamebeluzowewiton.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0e37a8e-6121-4b11-b436-9468da377eec/36162206901.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/69344146785.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/832bfe5f-3f53-4a47-9296-72e079ad4da1/13652928536.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/2162/2184/files/32025297757.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_off0000601f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x601F 4952 bytes
SHA-256: d88c23a4a2231fab34f356d825c465009bf4acf72f8d317a65b5332235608297
font_01_sfnt_off000070cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70CD 9676 bytes
SHA-256: 592bddb6872487434f13e1af23d7d9fd1313a2890cd9997472a2f17275829fec

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