Malicious PDF — malware analysis report

Static analysis result for SHA-256 d501394509ee0daf…

MALICIOUS

PDF

59.4 KB Created: 2020-10-15 06:52:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 56ca94c96b055247e2274889c49b7784 SHA-1: 9313a947a2cb0fcb2988c641849bd12bc65bcf12 SHA-256: d501394509ee0daf8054461e4f9d770854966e5f94705da8804b22b07fbfee3c
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://gettraff.ru/123?keyword=warhammer+40k+codices+pdf In PDF document text
    • https://site-1036713.mozfiles.com/files/1036713/50167070636.pdfIn PDF document text
    • https://site-1042092.mozfiles.com/files/1042092/berekuzuwokakoxukupepirul.pdfIn PDF document text
    • https://site-1038490.mozfiles.com/files/1038490/fujugatajaxurasamarose.pdfIn PDF document text
    • https://site-1042429.mozfiles.com/files/1042429/muzorokokufirutisubenu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365545/normal_5f8705bdce129.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366343/normal_5f878111dd1b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366384/normal_5f879b9fd0e73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366033/normal_5f874672a61d5.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/7360136.pdfIn PDF document text
    • https://gikoberi.weebly.com/uploads/1/3/0/9/130969260/welale_kidifita_wejozosididi_xanox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366375/normal_5f87787e60c77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366007/normal_5f87101d0ebfc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/16ccff84-e343-4398-8ee2-a16da3c8124a/89385388858.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82bf119a-500c-4492-9c9d-8253ae3b4e53/weremirefibuwokafix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b05ebbb3-c0f0-4070-b343-d256b4775594/murematame.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63ca521b-b3fa-4db9-92a7-5d5ca7574e9d/wufewajixanazivaxajatebeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e03064c0-0ce9-4646-8e1f-0650bac65016/bilapuvelalajenuwipefu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3c81d06-8f29-47e5-b83e-d826b8d11363/xejemigufewavafed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e33d5f58-2d79-4e1d-ae2d-73034d1b99a9/sifipesivudezip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cf2e73a-b384-42d6-8e05-9e00a7ce997e/70680326367.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b0fb7d0-8705-415f-ae65-744a54a45312/nogitur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c52fb8a-b70c-4321-a89a-9ee4e0747c8f/nonewizakokiziburenam.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_off00009c93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C93 5672 bytes
SHA-256: 77c357d55643beb72fd9ba9f30b57b93176319ebed1dbae5e1855b4340031f0a
font_01_sfnt_off0000afc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFC8 15588 bytes
SHA-256: c08ed8cd763d295112e263d86e9ea70e97e64ce40f976659cb6b1944f2885be4