Malicious PDF — malware analysis report

Static analysis result for SHA-256 1512155cd6013149…

MALICIOUS

PDF

43.8 KB Created: 2020-10-05 22:27:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0d9ed7303a2c1e2bf0446d9a2f6c83f9 SHA-1: edcd483fd1bd856bf55e8eda3d3c589fb91c4915 SHA-256: 1512155cd60131497c48bb290a3a8409bd8f001bae6a1e6cbbd65d171fcde2e1
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://cctraff.ru/strik?keyword=%25D1%2582%25D0%25B5%25D1%2580%25D0%25BD%25D0%25B5%25D1%2580+%25D0%25B8+%25D1%2585%25D1%2583%25D1%2587+%25D1%2581%25D0%25BA%25D0%25B0%25D1%2587%25D0%25B0%25D1%2582%25D1%258C+%25D1%2582%25D0%25BE%25D1%2580%25D1%2580%25D0%25B5%25D0%25BD%25D1%2582 In PDF document text
    • http://files.enaturalshredz.com/uploads/1/3/1/4/131406558/josin-sujogat-tuxadilolobodil-satugutopuv.pdfIn PDF document text
    • http://files.suzettemacgregor.com/uploads/1/3/1/1/131163977/cdf98abb.pdfIn PDF document text
    • http://panasej.blingattiphanys.com/uploads/1/3/0/9/130969186/zetazenadizafape.pdfIn PDF document text
    • http://files.lennoxleaf.org/uploads/1/3/0/7/130775740/zinawewudu-ridivejobo.pdfIn PDF document text
    • http://xevom.danrednermusic.com/uploads/1/3/1/6/131606938/minipudatategasudoz.pdfIn PDF document text
    • https://site-1042920.mozfiles.com/files/1042920/77871733705.pdfIn PDF document text
    • https://site-1037085.mozfiles.com/files/1037085/kogodumusibojibox.pdfIn PDF document text
    • https://site-1037253.mozfiles.com/files/1037253/wijokexofivatizavizil.pdfIn PDF document text
    • https://site-1037082.mozfiles.com/files/1037082/91413135239.pdfIn PDF document text
    • https://site-1036753.mozfiles.com/files/1036753/81232020303.pdfIn PDF document text
    • https://site-1048474.mozfiles.com/files/1048474/5354723348.pdfIn PDF document text
    • https://site-1037149.mozfiles.com/files/1037149/xevimita.pdfIn PDF document text
    • https://site-1042674.mozfiles.com/files/1042674/98046238265.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/1/0428/0093/9164/files/lekukogusixevezulamigexeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5147/7913/files/gusepixuzawagigaw.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_off00005f6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F6E 5412 bytes
SHA-256: e41e3f7bcba4e4e2e783b7ff20acb6614307285c7cd32620bd05a3b6058c5be7
font_01_sfnt_off0000716e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x716E 14616 bytes
SHA-256: 935c002265550c13873fbc7f91ac0aaad8b4a4f170a6a73c3b46fa6d1532994a

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