Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae5a0c8b3c3b67b5…

MALICIOUS

PDF

47.0 KB Created: 2020-10-14 04:52:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: bf847c231f902711fbdf3f834822d30a SHA-1: e4476ee43bc0b6e6479a8bec16f521394cffa395 SHA-256: ae5a0c8b3c3b67b5e1688868a577f6310c934d5f556e2d9414bfa4e7a0e9a1fc
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/strik?keyword=beigbeder+l%2527egoiste+romantique+pdf In PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/winepogor.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/1515306.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/7775416.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/199877.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/1109957.pdfIn PDF document text
    • https://site-1040387.mozfiles.com/files/1040387/76037562077.pdfIn PDF document text
    • https://site-1043829.mozfiles.com/files/1043829/51506131466.pdfIn PDF document text
    • https://site-1037897.mozfiles.com/files/1037897/zojotakexagefosexil.pdfIn PDF document text
    • https://site-1038556.mozfiles.com/files/1038556/49212610041.pdfIn PDF document text
    • https://site-1039753.mozfiles.com/files/1039753/70873232070.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/32e063a95e.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/dekegu.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/1/0480/4719/4276/files/meaning_in_hindi_to_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3709/8133/files/kukek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5587/3699/files/66423709969.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_off000073c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73C9 5712 bytes
SHA-256: 91e121c6d9642c195bf7513be163ae4638b4b37cd13198bea99b901d7378b951
font_01_sfnt_off00008715.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8715 12192 bytes
SHA-256: 6bbde9c1c33f7fa02b3d9af9cb58e5b049f01ebaf04f81619826577e752166f8