Malicious PDF — malware analysis report

Static analysis result for SHA-256 addd8b10cae3f21d…

MALICIOUS

PDF

41.8 KB Created: 2020-10-04 05:42:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 38f28062b6bfd6695814338cae9c0af2 SHA-1: b0320495e88f0e731eed5a4e479c3a055bd49d93 SHA-256: addd8b10cae3f21d100e8a32b2a757d38d4d57b8415d6e6d785b77c860ba1324
124 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.
  • 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://cctraff.ru/strik?keyword=jla+tower+of+babel+pdf In PDF document text
    • http://files.weber-davies.com/uploads/1/3/0/7/130776351/saxoti-mapexafoxegekum-podilaxapunapuf-sogefi.pdfIn PDF document text
    • http://gipew.youthultimateprogram.org/uploads/1/3/0/7/130775583/wowarefevadufet.pdfIn PDF document text
    • http://jebofik.collegiatelearningcenter.com/uploads/1/3/0/7/130738914/kuzaxifajenemitumak.pdfIn PDF document text
    • http://vikix.bpwnjfoundation.org/uploads/1/3/1/3/131381720/230ae88682d0331.pdfIn PDF document text
    • https://site-1037115.mozfiles.com/files/1037115/powevevexuriseporokupir.pdfIn PDF document text
    • https://site-1039772.mozfiles.com/files/1039772/futizal.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/1/0430/4040/7701/files/20956884843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3123/1644/files/2000_arctic_cat_500_4x4_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/3366/4922/files/nolidofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6935/3383/files/jepunimamawixuziza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2eecce3c-cc31-408a-b4de-0b9dc9d9a894/rerabufinoxegupa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bb5bb15-daf2-47af-844c-86230eab76b2/30819561705.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74b180b2-3e21-422c-af90-323e28ed43c5/19160847247.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_off000068ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68AB 5080 bytes
SHA-256: 42aafabb18c16139903bfe1a63a5ed90edc8f5e79fac3db433fd221d8ce0c8c3
font_01_sfnt_off00007a12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A12 9592 bytes
SHA-256: 6a555f7754b8b0fd5dae653b994823d095fbecf099ab9f02d04129a610ad64c5

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