Malicious PDF — malware analysis report

Static analysis result for SHA-256 3daab9936b95bb70…

MALICIOUS

PDF

43.8 KB Created: 2020-11-07 03:18:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 488c6ee596461bb87c555d1c538bf5da SHA-1: 160d6a12934a32a2c99f042d4a3264b535bde3be SHA-256: 3daab9936b95bb708972b11842228f5a0ea113186aaabea2b35a93a9ef22f96c
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://traffine.ru/aws?keyword=blue+damselfly+colorado In PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/damizokivovi.pdfIn PDF document text
    • https://gunulavosaki.weebly.com/uploads/1/3/4/3/134374607/reberupugub_vavosuvodi.pdfIn PDF document text
    • https://fomikozifu.weebly.com/uploads/1/3/4/5/134511133/7515792.pdfIn PDF document text
    • https://tanutefezuje.weebly.com/uploads/1/3/4/4/134437554/giwukenuririgum.pdfIn PDF document text
    • https://jutivodip.weebly.com/uploads/1/3/4/4/134489611/duzixizuweza-lubamowakefafos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://kitobus.files.wordpress.com/2020/11/41107870879.pdfIn PDF document text
    • https://jowurijovu.files.wordpress.com/2020/11/indicadores_de_gestion_de_compras.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b21581a7-8ca6-4765-a7de-ccb68d28c476/zigodenat.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/80376830593.pdfIn PDF document text
    • https://sidulemova.files.wordpress.com/2020/11/tojakabozemoxujinalagave.pdfIn PDF document text
    • https://tigudizu.files.wordpress.com/2020/11/6620520308.pdfIn PDF document text
    • https://mivepir.files.wordpress.com/2020/11/barikidovujog.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/google_tetris_game_free.pdfIn PDF document text
    • https://rabanebuvug.files.wordpress.com/2020/11/30421192975.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_off00006cde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CDE 5316 bytes
SHA-256: 160b15fd94b8172513cb4deb31fa2c5a6d7272b0dd45bb08a42c4138ab1d4962
font_01_sfnt_off00007eef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EEF 10428 bytes
SHA-256: 340026a1868dfaa6dce9d9b54cff876b50ba93a72174322279328e8c60ca7c21